WO1997041852A1 - Angiostatic compounds - Google Patents
Angiostatic compounds Download PDFInfo
- Publication number
- WO1997041852A1 WO1997041852A1 PCT/US1997/008066 US9708066W WO9741852A1 WO 1997041852 A1 WO1997041852 A1 WO 1997041852A1 US 9708066 W US9708066 W US 9708066W WO 9741852 A1 WO9741852 A1 WO 9741852A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkyl
- composition
- compounds
- neovascularization
- compound
- Prior art date
Links
- 0 CC(C(OCCC(C)(Cc1c2C)Oc1c(C)c(C)c2O)=O)c(cc1)cc2c1cc(*)cc2 Chemical compound CC(C(OCCC(C)(Cc1c2C)Oc1c(C)c(C)c2O)=O)c(cc1)cc2c1cc(*)cc2 0.000 description 3
- MFXUDTHESPAVKL-UHFFFAOYSA-N CC(C(OCCC(C)(CCc1c2C)Oc1c(C)c(C)c2O)=O)c(cc1)cc(F)c1-c1ccccc1 Chemical compound CC(C(OCCC(C)(CCc1c2C)Oc1c(C)c(C)c2O)=O)c(cc1)cc(F)c1-c1ccccc1 MFXUDTHESPAVKL-UHFFFAOYSA-N 0.000 description 1
- WTKKZKIEYRQEGK-UHFFFAOYSA-N CC(C)OC(C(C)c(cc1)cc(N)c1-c1ccccc1)=O Chemical compound CC(C)OC(C(C)c(cc1)cc(N)c1-c1ccccc1)=O WTKKZKIEYRQEGK-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/34—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
- A61K31/343—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide condensed with a carbocyclic ring, e.g. coumaran, bufuralol, befunolol, clobenfurol, amiodarone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/352—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. methantheline
- A61K31/353—3,4-Dihydrobenzopyrans, e.g. chroman, catechin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/496—Non-condensed piperazines containing further heterocyclic rings, e.g. rifampin, thiothixene
Definitions
- the present invention relates to certain compounds useful in preventing and treating
- chroman-type compounds and methods to treat neovascularization.
- Angiogenesis is a term used to describe the development of new blood vessels or
- angiogenesis dependent diseases arise where blood vessel growth is actually harmful.
- Such pathologies include diabetic retinopathies, proliferative vitreoretinopathies, psoriasis,
- Tumor growth is dependent on neovascularization.
- Angiogenesis is also associated with important diseases of ocular tissue especially
- Neovascularization can
- the most threatening ocular neovascular diseases are those which involve the retina.
- macular degeneration develop subretinal neovascularization which leads to their eventual blindness.
- the bleb which is a tissue wound in the eye, has a tendency to close
- Retinal neovascularization is often treated with multiple laser burns to the retina to remove
- neovascular diseases of the anterior chamber e.g. corneal neovascularization, ulcerative colitis
- potent topical ocular e.g. corneal neovascularization, ulcerative colitis
- neovascularization and the progress of the overall disease. In addition, they can cause
- angiostatic steroids functioning to inhibit
- angiogenesis in the presence of heparin or specific heparin fragments are disclosed in
- Glucocorticoids as mentioned above, have also been shown to inhibit angiogenesis.
- Such problems include elevated intraocular pressure
- fibroblast growth factor disclosed in WO 9106668
- platelet factor 4 disclosed in WO 9302192
- thrombospondin fragments disclosed in WO 9316716.
- This invention is directed to compositions containing angiostatic compounds and
- compositions are useful for controlling ocular structures
- the compounds are useful in treating glaucoma filtration
- compositions of the present invention contain compounds which have the general formula (I):
- n 1 or 2;
- R is H, C,-C 6 alkyl or C 3 -C 6 cycloalkyl
- R" is H or C,-C 6 alkyl
- R' can not be H, when q is 1 to 10;
- Z if present, is H, C r C 6 alkyl, C 3 -C 6 cycloalkyl, or selected from the group consisting of:
- D is O or NR
- E and E' are independently H, F or Cl.
- the compounds of the present invention also include pharmaceutically acceptable salts of the compounds of formula (I).
- Vitamin E succinate (VES) ("Compound G")
- neovascularization is similar in all tissues regardless of the associated disease, Furcht,
- BenEzra may be different inducers depending on the disease or surgery involved, BenEzra,
- angiostatic agents work by inhibiting one or more steps in the process of
- angiostatic compounds of this invention are useful in
- the angiostatic compositions of the present invention are useful in inhibiting
- pathological neovascularization in human patients.
- pathological neovascularization in human patients.
- neovascularization refers to those conditions where the formation of blood vessels
- neovascularization is harmful to the patient.
- pathological neovascularization is harmful to the patient.
- dependent diseases include: head trauma, spinal trauma, systemic or traumatic shock,
- compositions are useful in preventing and treating any ocular
- neovascularization including, but not limited to: retinal diseases (diabetic retinopathy,
- retinopathy inflammatory diseases; chronic uveitis; neoplasms (retinoblastoma,
- pseudoglioma and melanoma Fuchs' heterochromic iridocyclitis; neovascular glaucoma;
- corneal neovascularization inflammatory, transplantation and developmental hypoplasia
- compositions of the present invention to ameliorate complications
- Glaucoma filtration surgery involves the surgical creation of a fistula with a conjuctival
- vascularization may feed the fibroblasts which migrate, proliferate, and block the bleb, or the vascularization itself may also result
- angiostatic agents of the present invention are useful in treating
- pterygium primary and recurrent
- hyperkeratosis hyperkeratosis
- cheloid formation polyp formation
- the compounds of formula (I) may be contained in various types of pharmaceutical compositions, in accordance with formulation techniques known to those skilled in the art.
- the compounds may be included in tablets, capsules, solutions, suspensions
- solutions, suspensions and gels adapted for topical ophthalmic use are provided for parenteral use; solutions, suspensions and gels adapted for topical ophthalmic use;
- tissue irrigating solutions are particularly concerned with the involved tissues, such as tissue irrigating solutions.
- the present invention is particularly directed to the provision of compositions
- compositions of the present invention are adapted for treatment of ophthalmic tissues.
- the ophthalmic compositions of the present invention are adapted for treatment of ophthalmic tissues.
- inventions will include one or more compounds of formula (I) and a pharmaceutically
- Aqueous solutions are generally preferred,
- compositions by means of instilling one to two drops of the solutions in the affected eyes.
- the compounds of formula (I) may also be readily incorporated into other types of compositions, such as suspensions, viscous or semi-viscous gels or other types of solid
- compositions of the present invention which are relatively insoluble in water.
- inventions may also include various other ingredients, such as buffers, preservatives, co- solvents and viscosity building agents.
- An appropriate buffer system e.g., sodium phosphate, sodium acetate or sodium
- borate may be added to prevent pH drift under storage conditions.
- Ophthalmic products are typically packaged in multidose form. Preservatives are
- Such preservatives are typically employed at a
- Some of the compounds of formula (I) may have limited solubility in water and
- co-solvents include: polyethoxylated castor oils, Polysorbate 20, 60 and 80; Pluronic® F-
- Viscosity greater than that of simple aqueous solutions may be desirable to increase
- building agents include, for example, polyvinyl alcohol, polyvinyl pyrrolidone, methyl
- agents are typically employed at a level of from 0.01 to 2 wt.%.
- the route of administration e.g., topical, parenteral or oral
- dosage regimen e.g., topical, parenteral or oral
- condition being treated the severity of the condition, the age and general physical condition of the patient, and so on.
- angiogenesis in ophthalmic tissues is a particularly important aspect of the present
- the compounds may also be used as an adjunct to ophthalmic surgery, such as
- the compounds may be vitreal or subconjunctival injection following ophthalmic surgery.
- the compounds may be vitreal or subconjunctival injection following ophthalmic surgery.
- the compounds may be vitreal or subconjunctival injection following ophthalmic surgery.
- the compounds may also be used.
- electrolytes such as sodium, potassium, calcium, magnesium and/or chloride
- Topical aqueous solutions, suspensions, ointments, creams and gels are the preferred
- Topical ophthalmic formulations are suitable for preventing glaucoma filtration
- pharmaceutically effective amount to inhibit or reduce neovascularization, is that amount
- the angiostatic compounds will be described by the angiostatic compounds which are involved in the pathological condition.
- the angiostatic compounds will be described by the angiostatic compounds.
- Preferable concentrations range from about 0.1 to about 5.0
- compositions of the present invention are further illustrated by the following
- Topical compositions useful for controlling ocular neovascularization are:
- a preferred topical composition useful for controlling neovascularization is
- the above formulation is prepared by first placing a portion of the purified water into a beaker and heating to 90°C.
- the hydroxypropylmethylcellulose (HPMC) is then added to the heated water and mixed by means of vigorous vortex stirring until all of the HPMC is dispersed.
- the resulting mixture is then allowed to cool while undergoing mixing in order to hydrate the HPMC.
- the resulting solution is then sterilized by means of autoclaving in a vessel having a liquid inlet and a hydrophobic, sterile air vent filter.
- the sodium chloride and the edetate disodium are then added to a second portion of the purified water and dissolved.
- the benzalkonium chloride is then added to the solution, and the pH of the solution is adjusted to 7.4 with 0.1M NaOH/HCl.
- the solution is then sterilized by means of filtration.
- Compound A is sterilized by either dry heat or ethylene oxide. If ethylene oxide sterilization is selected, aeration for at least 72 hours at 50°C. is necessary. The sterilized angiogenic compound is weighed aseptically and placed into a pressurized ballmill container. The tyloxapol, in sterilized aqueous solution form, is then added to the ballmill container. Sterilized glass balls are then added to the container and the contents of the container are milled aseptically at 225 ⁇ m for 16 hours, or until all particles are in the range of approximately 5 microns.
- the micronized drug suspension formed by means of the preceding step is then poured into the HPMC solution with mixing.
- the ballmill container and balls contained therein are then rinsed with a portion of the solution containing the sodium chloride, the edetate disodium and benzalkonium chloride.
- the rinse is then added aseptically to the HPMC solution.
- the final volume of the solution is then adjusted with purified water and, if necessary, the pH of the solution is adjusted to pH 7.4 with NaOH/HCl.
- an angiostatic compound with inactive ingredients such as starch, lactose and magnesium stearate
- inactive ingredients such as starch, lactose and magnesium stearate
- a preferred formulation for oral administration is a preferred formulation for oral administration:
- Compound A with inactive ingredients such as starch, lactose and magnesium stearate can be formulated according to procedures known to those skilled in the art of tablet formulation.
- inactive ingredients such as starch, lactose and magnesium stearate
- Cream 1 mg/g of an angiostatic compound in cream base of purifed water, emulsifying wax, propylene glycol, stearic acid, isopropyl palmitate, synthetic beeswax, polysorbate 60, potassium sorbate, sorbic acid, propyl gallate, citric acid, and sodium hydroxide.
- Ointment 1 mg/g of an angiostatic compound in base of mineral oil and polyethylene.
- angiostatic compound with the following inactive ingredients: glycerin, butylateal hydroxytoluene, butylated hydroxyanisole, edetic acid, polyethylene glycol, and sodium chloride.
- compositions and methods of the present invention are further illustrated by the following compositions and methods of the present invention.
- Representative compounds of the present invention were assayed for their efficacy in inhibiting endothelial cell proliferation. Briefly, human umbilical vein endothelial cells (HUVEC) were seeded in 6-well plates at a density of 2500/cm . At mid-log phase the cells were treated with a test compound or vehicle control. Forty-eight (48) hours later the cells were detached from the plate and counted using a coulter counter. Viability tests were conducted using trypan blue. The data is expressed as percent inhibition based on the control number of endothelial cells counted. The results are illustrated in Table 1 below:
- Table 2 demonstrates the endothelial cell anti-proliferative efficacy of representative compounds of the present invention, as compared to naproxen and vitamin E.
- Representative compounds of the present invention were assayed for their efficacy in inhibiting 3 H-thymidine uptake in DNA as a measure of DNA synthesis (R.I. Freshney, Culture of Animal Cells. 3rd Edition, John Wiley and Sons, N.Y., N.Y., pages 277-278 (1994)). Briefly, human lung microvascular endothelial cells in mid-log phase were exposed to either a representative compound of the present invention or the vehicle (1.0% DMSO) for 18 hours. Cells were then incubated with H-thymidine for another 6 hours. DNA synthesis was stopped by the addition of cold 5% TCA solution and the relative synthesis assessed by measuring H-thymidine inco ⁇ orated into the acid-insoluble product. The data is expressed as percent inhibition of uptake based on tritium counts in the vehicle control reactions. The results are presented in Table 2 below: TABLE 2
- Table 2 demonstrates the efficacy of representative compounds of the present invention in inhibiting endothelial cell proliferation based on the inhibition of DNA synthesis.
- Representative compounds of the present invention were assayed for their efficacy in inhibiting angiogenesis in a chorioallantoic membrane (CAM) model (See, McNatt, et al., Angiostatic Activity and Metabolism ofCortisol in The Chorioallantoic Membrane (CAM) of the Chick Embryo, Journal of Steriod Biochemistry and Molecular Biology, volume 42, No. 7, pages 687-693 (1992)). Briefly, 10 ⁇ g of the test compound or reference compound (tetrahydrocortisol) were suspended in a liposome/agarose bead and placed on the CAM of a 5-6 day chicken embryo. Following 2 days of incubation, the CAMs were scored for relative angiostatic activity by comparing percent responding embryos per nanomole test compound to percent responding embryos for the reference compound. The results are illustrated in Table 3 below:
- Representative compounds of the present invention were assayed for their efficacy in inhibiting angiogenesis in vivo, in a rabbit model of lipopolysaccharide (LPS) induced corneal neovascularization. Briefly, the test compound and LPS (a stimulus for initiating neovascularization) are inco ⁇ orated into separate Elvax-40 pellets as described in D.
- LPS lipopolysaccharide
- Some of the compounds of the present invention may contain a nonsteroidal anti-
- NSAIA inflammatory agent
- the compounds of the present invention are synthesized by known methods in the
- naproxen can be made by methods illustrated in Scheme 1 and 2, and Examples 13-16.
- V L C1, BR, I, OMs, OTs I
- the conversion of the carboxylic acid containing nonsteroidal anti-inflammatory agents (II) to esters or amides (I) may be carried out by the following methods:
- carboxylic acids (II) may be reacted with the appropriate amine or alcohol derivative (III) in the presence of a coupling reagent, such as dicyclohexylcarbodiimide or l-(3-dimethylaminopropyl)-3-ethyl carbodiimide HCI, and 4-dimethylamine pyridine or 1-hydroxybenzotriazole, in an inert organic solvent, such as acetonitrile or tetrahydrofuran, and at a temperature from 0°C to 50°C.
- a coupling reagent such as dicyclohexylcarbodiimide or l-(3-dimethylaminopropyl)-3-ethyl carbodiimide HCI
- 4-dimethylamine pyridine or 1-hydroxybenzotriazole in an inert organic solvent, such as acetonitrile or tetrahydrofuran, and at a temperature from 0°C to 50°C.
- carboxylic acids (II) may be converted to acid chlorides (IV) by reacting them with a reagent such as thionyl chloride or oxalyl chloride, in the presence of an inert solid or neat, at a temperature from 0°C to 80°C.
- a reagent such as thionyl chloride or oxalyl chloride
- the resulting acid chloride (IV) may be reacted with the desired amine or alcohol (III) in an inert solvent such as tetrahydrofuran, in the presence of pyridine or a tertiary amine, such as triethylamine.
- esters (I) may be formed by reacting carboxylate anions (V), formed by reacting the carboxylic acid (II) with a base such as sodium hydride, with a halide (iodide, bromide, chloride) or sulfonate (mesylate, tosylate) (VI), in a solvent such as acetonitrile or dimethylformamide, at a temperature from 0°C to 100°C.
- a base such as sodium hydride
- a halide iodide, bromide, chloride
- sulfonate mesylate, tosylate
- amides (I) may be prepared by reacting carboxylate anions (V), formed by reacting carboxylic acid (II) with a base such as sodium hydride, with ethyl bromoacetate.
- the resulting ester (VII) is reacted with the desired amine (VIII), neat or in an inert solvent, such as acetonitrile or dimethylformamide, at a temperature from 0°C to 100°C.
- Compounds of formula (I) may exist as mixtures of stereoisomers.
- the preparation of the individual stereoisomers may be effected by preparing and resolving the acids (II), by known methods, and then using a single stereoisomer as starting material.
- Compounds (III), (VI) and (VIII) may be prepared as single stereoisomers from compounds of formula (XI a-b ), shown in Table 5 below, using known methods:
- W is (CH 2 ) p -Q; p is 0-1 ; Q is CH 2 OH or CO 2 H;
- R' is H, C(O)R, C(O)NR 2 , PO 3 ' , or SO 3 " ; and R" is H or C,-C 6 alkyl.
- the alcohols (XI a-b ) may be resolved by forming esters with optically active carboxylic acids, separating the diastereomers, and then hydrolyzing the resolved diastereomers.
- the corresponding carboxylic acids (XI a-b ) may be resolved by forming an ester with an optically active alcohol, separating the diastereomers, and then hydrolyzing the resolved diastereomers.
- the amines of formula (I), where Y is NR, may be converted to amine salts by reacting the amine with acids of sufficient strength to produce an organic or inorganic salt.
- the pharmaceutically acceptable anions include: acetate, bromide, chloride, citrate, maleate, fumarate, mesylate, phosphate, sulfate and tartrate.
- reaction mixture was diluted with ethyl acetate (70 mL), washed with water (2x 15 mL), followed by brine (15 mL) and then dried (sodium sulfate). The mixture was concentrated in vacuo and the residue subjected to flash chromatography (silica gel, 100-50:0-50, v:v, hexanes:ethyl acetate).
- the white solid was recrystallized from an ethyl acetate-hexanes mixture to give 0.60 g (33.1% yield) of 2-(6-hydroxy-2,5,7,8-tetramethyl-3.4-dihydro-2H- benzo[l,2-b]pyran-2yl)ethyl 2-(6-methoxy-2-naphthyl)propionate, a mixture of diastereomers, as a white solid.
Abstract
The present invention is directed to compositions containing chroman-type or benzfuran type compounds and methods for their use in preventing pathological neovascularization.
Description
ANGIOSTATIC COMPOUNDS
Background of the invention
The present invention relates to certain compounds useful in preventing and treating
neovascularization. Specifically, the invention is directed to compositions containing
chroman-type compounds and methods to treat neovascularization.
Angiogenesis is a term used to describe the development of new blood vessels or
neovascularization (L. Diaz-Flores et al., Angiogenesis: an Update, Histology and
Histopathologv. volume 9, pages 807-843 (1994)). Though angiogenesis is a normal
process for the development or maintenance of the vasculature, pathological conditions
(i.e., angiogenesis dependent diseases) arise where blood vessel growth is actually harmful.
Such pathologies include diabetic retinopathies, proliferative vitreoretinopathies, psoriasis,
arthritis and tumor development. The progression of angiogenesis occurs in several phases
which include: elaboration of the angiogenic signal; dissolution of the blood vessel
basement membrane; endothelial cell proliferation; endothelial cell migration; and
formation and differentiation of capillary tubules and loops. Each of these phases is a
potential target for pharmacological intervention.
Tumor growth is dependent on neovascularization. For solid tumors to grow
beyond the size of a pea, they must become vascularized. They do so by secreting their
own angiogenic factor(s) which recruit new blood vessels to provide essential nutrients and
oxygen.
Angiogenesis is also associated with important diseases of ocular tissue especially
in older patients and diabetics. Any abnormal growth of blood vessels in the eye can
scatter and block the incident light prior to reaching the retina. Neovascularization can
occur at almost any site in the eye and significantly alter ocular tissue function. Some of
the most threatening ocular neovascular diseases are those which involve the retina. For
example, many diabetic patients develop a retinopathy which is characterized by the
formation of leaky, new blood vessels on the anterior surface of the retina and in the
vitreous causing proliferative vitreoretinopathy. A subset of patients with age related
macular degeneration develop subretinal neovascularization which leads to their eventual blindness.
Another area involving neovascularization and unwanted tissue growth involves the
technique of glaucoma filtration surgery. With this technique, a small fistula or bleb is
surgically formed in the eye to facilitate drainage of aqueous humor, and therefore reduce
the intraocular pressure of the eye. This technique can be frustrated, however, by the
closure of the bleb. The bleb, which is a tissue wound in the eye, has a tendency to close
up due to normal healing processes involving the addition of fibroblasts and/or
neovasculature. Therefore, an agent which inhibits bleb vascularization and fibroblast
proliferation would be useful in maintaining bleb patency.
Current therapy for the treatment of ocular neovascular disease is not very effective.
Retinal neovascularization is often treated with multiple laser burns to the retina to remove
the pathological vasculature. Patients with neovascular diseases of the anterior chamber
(e.g. corneal neovascularization, iritis rubeosis) are treated with potent topical ocular
glucocorticoids. These therapies are only partially effective and generally only slow
neovascularization and the progress of the overall disease. In addition, they can cause
severe side effects if used over a relatively long period of time.
Other attempts have been made to provide therapies for the prevention or treatment
of pathological angiogenesis. For example, angiostatic steroids functioning to inhibit
angiogenesis in the presence of heparin or specific heparin fragments are disclosed in
Crum, et al., A New Class of Steroids Inhibits Angiogenesis in the Presence of Heparin or a
Heparin Fragment, Science, volume 230, pages 1375-1378 (1985). Another group of
angiostatic steroids useful in inhibiting angiogenesis is disclosed in commonly assigned
United States Patent No. 5,371 ,078 (Clark et al).
Glucocorticoids, as mentioned above, have also been shown to inhibit angiogenesis.
However, the use of glucocorticoid therapy in general is complicated by the inherent
problems associated with steroid applications. Such problems include elevated intraocular
pressure (Kitazawa, Increased Intraocular Pressure Induced by Corticosteroids, American Journal of Ophthalmology, volume 82, pages 492-493 (1976)).
Still other therapies have included: the use of protamine (S. Taylor, Protamine is an
Inhibitor of Angiogenesis, Nature, volume 297, pages 307-312 (1982)); the use of calcitriol
(European Journal of Pharmacology, volume 178, pages 247-250 (1990)); and the use of
the antibiotic, fumagillin and its analogs, disclosed in EP 354787. The use of a variety of
pharmaceutical proteins has also been proposed for treating angiogenesis. Such therapies
have included: monoclonal antibodies directed to fibroblast growth factor, disclosed in WO
9106668; platelet factor 4, disclosed in WO 9302192; and thrombospondin fragments, disclosed in WO 9316716.
Summary of the Invention
This invention is directed to compositions containing angiostatic compounds and
methods of using these compositions to prevent and/or treat neovascularization in human patients. In particular, the compositions are useful for controlling ocular
neovascularization. Additionally, the compounds are useful in treating glaucoma filtration
bleb failure, pterygium, hyperkeratosis, cheloid formation and polyp formation.
The compositions of the present invention also have the advantage of providing
effective angiostatic therapy which avoids the problems inherent in steroid therapies.
Detailed Description of the Invention
The compositions of the present invention contain compounds which have the general formula (I):
n is 1 or 2;
R is H, C,-C6 alkyl or C3-C6 cycloalkyl;
Y is H, C,-C6 alkyl, C3-C6 cycloalkyl, O, NR, C(R)2 , CH(OH) or S(O)n. ; n' is 0 to 2;
R' is H, C(O)R, C(O)N(R)2, PO3 " , SO3 " , or HO2C(CH2)2(C=O)— ;
R" is H or C,-C6 alkyl;
R3 is H, C,-C6 alkyl, (CH2)q(OH), — (C=O)O(CH2)qCH3 or
Z, if present, is H, CrC6 alkyl, C3-C6 cycloalkyl, or selected from the group consisting of:
wherein:
D is O or NR; and
E and E' are independently H, F or Cl.
The compounds of the present invention also include pharmaceutically acceptable salts of the compounds of formula (I).
The following compounds are particularly preferred for use in the compositions and
2-(6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-benzo[l,2-b]pyran-2-yl)ethyl 2-(6- methoxy-2-naphthyl)propionate ("Compound A");
2-(5-hydroxy-2,4,6,7-tetramethyl-2,3-dihydro-benzo[l ,2-b]furan-2-yl)methyl 2-(6- methoxy-2-naphthyl)propionate ("Compound B");
N-(2-(6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-benzori,2-b]pyran-2-yl)methyl) 2-(6- methoxy-2-naphthyl)propionamide ("Compound C");
2-(5-hydroxy-2,4,6,7-tetramethyl-2,3-dihydro-benzo[l,2-b]furan-2-yl)ethyl 2-(6-methoxy- 2-naphthyl)propionate ("Compound D");
l-[2-(5-hydroxy-2,4,6,7-tetramethyl-2,3-dihydro-benzo[l,2-b]furan-2-yl)2-ethyl]-4-[4,4'- fluorobenzhydryl]piperzine ("Compound E")
2-(6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-benzo[l,2-b]pyran-2-yl)ethanol ("Compound F")
Vitamin E succinate (VES) ("Compound G")
2-(6-hydroxy-2,5,7,8-tetramethyl-2,3-dihydro-2H-benzo[l ,2-b]pyran-2-yl)ethyl 2-(3- fluoro-4-phenyl-phenyl)propionate ("Compound H").
The initiation of new blood vessel formation may arise quite differently in various
tissues or as a result of different diseases. Many substances have been found to induce
neovascularization, see, Folkman, et al., Angiogenic Factors, Science, volume 235, pages
442-447 (1987). However, it is believed, that once initiated, the process of
neovascularization is similar in all tissues regardless of the associated disease, Furcht,
Critical Factors Controlling Angiogenesis: Cell Products, Cell Matrix, and Growth
Factors, Laboratory Investigation, volume 55, No. 5, pages 505-509 (1986).
There are many theories associated with the cause of neovascularization, and there
may be different inducers depending on the disease or surgery involved, BenEzra,
Neovasculogenic Ability of Prostaglandins, Growth Factors, and Synthetic
Chemoattractants, American Journal of Ophthalmology, volume 86, No. 4, pages 455-461,
(October, 1978). Regardless of the cause or the associated disease, it is believed that
angiostatic agents work by inhibiting one or more steps in the process of
neovascularization. Therefore, the angiostatic compounds of this invention are useful in
the treatment and prevention of neovascularization associated with a variety of diseases and
surgical complications.
The angiostatic compositions of the present invention are useful in inhibiting
pathological neovascularization in human patients. As used herein, the term "pathological
neovascularization" refers to those conditions where the formation of blood vessels
(neovascularization) is harmful to the patient. Examples of pathological neovascularization
dependent diseases include: head trauma, spinal trauma, systemic or traumatic shock,
stroke, hemorrhagic shock, cancer, arthritis, arteriosclerosis, angiofibroma, arteriovenous
malformations, corneal graft neovascularization, delayed wound healing, diabetic
retinopathy, granulations, burns, hemangioma, hemophilic joints, hypertrophic scars, ocular
neovascularization, nonunion fractures, Osier-Weber Syndrome, psoriasis, pyogenic
granuloma, retrolental fibroplasia, pterigium, scleroderma, trachoma, vascular adhesions,
and solid tumor growth.
In particular, the compositions are useful in preventing and treating any ocular
neovascularization, including, but not limited to: retinal diseases (diabetic retinopathy,
chronic glaucoma, retinal detachment, sickle cell retinopathy and subretinal
neovascularization due to senile macular degeneration); rubeosis iritis; proliferative vitreo¬
retinopathy; inflammatory diseases; chronic uveitis; neoplasms (retinoblastoma,
pseudoglioma and melanoma); Fuchs' heterochromic iridocyclitis; neovascular glaucoma;
corneal neovascularization (inflammatory, transplantation and developmental hypoplasia of
the iris); neovascularization following a combined vitrectomy and lensectomy; vascular
diseases (retinal ischemia, choroidal vascular insufficiency, choroidal thrombosis and
carotid artery ischemia); neovascularization of the optic nerve; and neovascularization due
to penetration of the eye or contusive ocular injury.
The use of the compositions of the present invention to ameliorate complications
arising from glaucoma filtration surgery is a particularly important aspect of the invention.
Glaucoma filtration surgery involves the surgical creation of a fistula with a conjuctival
flap which allows the direct drainage of aqueous humor from the anterior chamber into the
conjuctival tissue, thereby lowering the elevated intraocular pressure associated with
glaucoma. However, in many patients, the filtration "bleb" becomes scarred or healed over
so that aqueous drainage can no longer occur. It has been noted that failing filtration blebs
may become vascularized prior to failure. This vascularization may feed the fibroblasts
which migrate, proliferate, and block the bleb, or the vascularization itself may also result
in physical blockage of the bleb. It is therefore likely that inhibition of filtration bleb neovascularization may inhibit filtration bleb failure.
Additionally the angiostatic agents of the present invention are useful in treating
pterygium (primary and recurrent), hyperkeratosis, cheloid formation and polyp formation.
The compounds of formula (I) may be contained in various types of pharmaceutical compositions, in accordance with formulation techniques known to those skilled in the art.
For example, the compounds may be included in tablets, capsules, solutions, suspensions
and other dosage forms adapted for oral administration; solutions and suspensions adapted
for parenteral use; solutions, suspensions and gels adapted for topical ophthalmic use;
solutions and suspensions adapted for intra-vitreal or intra-cameral use; and suppositories
for rectal use. Solutions, suspensions and other dosage forms adapted for topical
application to the involved tissues, such as tissue irrigating solutions, are particularly
preferred for treatment of acute conditions associated with surgery or other forms of
trauma.
The present invention is particularly directed to the provision of compositions
adapted for treatment of ophthalmic tissues. The ophthalmic compositions of the present
invention will include one or more compounds of formula (I) and a pharmaceutically
acceptable vehicle for said compound(s). Various types of vehicles may be used. The
vehicles will generally be aqueous in nature. Aqueous solutions are generally preferred,
based on ease of formulation, as well as a patients' ability to easily administer such
compositions by means of instilling one to two drops of the solutions in the affected eyes.
However, the compounds of formula (I) may also be readily incorporated into other types
of compositions, such as suspensions, viscous or semi-viscous gels or other types of solid
or semi-solid compositions. Suspensions may be preferred for compounds of formula (I)
which are relatively insoluble in water. The ophthalmic compositions of the present
invention may also include various other ingredients, such as buffers, preservatives, co- solvents and viscosity building agents.
An appropriate buffer system (e.g., sodium phosphate, sodium acetate or sodium
borate) may be added to prevent pH drift under storage conditions.
Ophthalmic products are typically packaged in multidose form. Preservatives are
thus required to prevent microbial contamination during use. Suitable preservatives
include: benzalkonium chloride, thimerosal, chlorobutanol, methyl paraben, propyl
paraben, phenylethyl alcohol, edetate disodium, sorbic acid, polyquaternium- 1 , or other
agents known to those skilled in the art. Such preservatives are typically employed at a
level of from 0.001 to 1.0 percent by weight, based on the total weight of the composition
(wt.%).
Some of the compounds of formula (I) may have limited solubility in water and
therefore may require a surfactant or other appropriate co-solvent in the composition. Such
co-solvents include: polyethoxylated castor oils, Polysorbate 20, 60 and 80; Pluronic® F-
68, F-84 and P-103 (BASF Corp., Parsippany NJ, USA); cyclodextrin; or other agents
known to those skilled in the art. Such co-solvents are typically employed at a level of
from 0.01 to 2 wt.%.
Viscosity greater than that of simple aqueous solutions may be desirable to increase
ocular absoφtion of the active compound, to decrease variability in dispensing the
formulations, to decrease physical separation of components of a suspension or emulsion of
formulation and/or otherwise to improve the ophthalmic formulation. Such viscosity
building agents include, for example, polyvinyl alcohol, polyvinyl pyrrolidone, methyl
cellulose, hydroxypropyl methylcellulose, hydroxyethyl cellulose, carboxymethyl
cellulose, hydroxypropyl cellulose or other agents known to those skilled in the art. Such
agents are typically employed at a level of from 0.01 to 2 wt.%.
The route of administration (e.g., topical, parenteral or oral) and the dosage regimen
will be determined by skilled clinicians, based on factors such as the exact nature of the
condition being treated, the severity of the condition, the age and general physical condition of the patient, and so on.
As indicated above, use of the compounds of formula (I) to prevent or reduce
angiogenesis in ophthalmic tissues is a particularly important aspect of the present
invention. The compounds may also be used as an adjunct to ophthalmic surgery, such as
by vitreal or subconjunctival injection following ophthalmic surgery. The compounds may
be used for acute treatment of temporary conditions, or may be administered chronically,
especially in the case of degenerative disease. The compounds may also be used
prophylactically, especially prior to ocular surgery or noninvasive ophthalmic procedures,
or other types of surgery.
The use of physiologically balanced irrigating solutions as pharmaceutical vehicles
for the compounds of formula (I) is preferred when the compositions are administered
intraocularly. As used herein, the term "physiologically balanced irrigating solution"
means a solution which is adapted to maintain the physical structure and function of tissues
during invasive or noninvasive medical procedures. This type of solution will typically
contain electrolytes, such as sodium, potassium, calcium, magnesium and/or chloride; an
W
energy source, such as dextrose; and a buffer to maintain the pH of the solution at or near
physiological levels. Various solutions of this type are known (e.g., Lactated Ringers
Solution). BSS® Sterile Irrigating Solution and BSS Plus® Sterile Intraocular Irrigating
Solution (Alcon Laboratories, Inc., Fort Worth, Texas, USA) are examples of
physiologically balanced intraocular irrigating solutions. The latter type of solution is
described in United States Patent No. 4,550,022 (Garabedian, et al.), the entire contents of
which are hereby incoφorated in the present specification by reference.
The specific type of formulation selected will depend on various factors, such as the
compound or its salt being used, the dosage frequency, and the disease being treated.
Topical aqueous solutions, suspensions, ointments, creams and gels are the preferred
dosage forms for the treatment of pterygium, hyperkeratosis, and cheloid and polyp
formation. Topical ophthalmic formulations are suitable for preventing glaucoma filtration
bleb failure or scar formation associated with ophthalmic surgery.
In general, the doses utilized for the above described puφoses will vary, but will be
in an effective amount to inhibit or reduce neovascularization. As used herein, the term
"pharmaceutically effective amount" to inhibit or reduce neovascularization, is that amount
which inhibits formation of new blood vessels or reduces the number of blood vessels
which are involved in the pathological condition. The angiostatic compounds will
normally be contained in these formulations in an amount from about 0.01 to about 10.0
weight/percent. Preferable concentrations range from about 0.1 to about 5.0
weight/percent. Thus, for topical administration, these formulations are delivered to the
disease site one to six times a day, depending on the routine discretion of the skilled
clinician. Systemic administration, for example, in the form of tablets or suppositories is
useful for the treatment of polyp formation. Tablets containing 10-1000 mg of a compound
can be taken 2-3 times per day depending on the discretion of the skilled clinician.
The compositions of the present invention are further illustrated by the following
examples.
Example 1
Topical compositions useful for controlling ocular neovascularization:
Example 2
A preferred topical composition useful for controlling neovascularization:
The above formulation is prepared by first placing a portion of the purified water into a beaker and heating to 90°C. The hydroxypropylmethylcellulose (HPMC) is then added to the heated water and mixed by means of vigorous vortex stirring until all of the HPMC is dispersed. The resulting mixture is then allowed to cool while undergoing mixing in order to hydrate the HPMC. The resulting solution is then sterilized by means of autoclaving in a vessel having a liquid inlet and a hydrophobic, sterile air vent filter.
The sodium chloride and the edetate disodium are then added to a second portion of the purified water and dissolved. The benzalkonium chloride is then added to the solution, and the pH of the solution is adjusted to 7.4 with 0.1M NaOH/HCl. The solution is then sterilized by means of filtration.
Compound A is sterilized by either dry heat or ethylene oxide. If ethylene oxide sterilization is selected, aeration for at least 72 hours at 50°C. is necessary. The sterilized angiogenic compound is weighed aseptically and placed into a pressurized ballmill container. The tyloxapol, in sterilized aqueous solution form, is then added to the ballmill container. Sterilized glass balls are then added to the container and the contents of the container are
milled aseptically at 225 φm for 16 hours, or until all particles are in the range of approximately 5 microns.
Under aseptic conditions, the micronized drug suspension formed by means of the preceding step is then poured into the HPMC solution with mixing. The ballmill container and balls contained therein are then rinsed with a portion of the solution containing the sodium chloride, the edetate disodium and benzalkonium chloride. The rinse is then added aseptically to the HPMC solution. The final volume of the solution is then adjusted with purified water and, if necessary, the pH of the solution is adjusted to pH 7.4 with NaOH/HCl.
Example 3
Formulation for oral administration:
Tablet:
10-1000 mg of an angiostatic compound with inactive ingredients such as starch, lactose and magnesium stearate can be formulated according to procedures known to those skilled in the art of tablet formulation.
Example 4
Formulation for sterile intraocular injection:
Example 5
Preferred formulation for a topical ocular solution:
Example 6
A preferred formulation for oral administration:
Tablet:
5-100 mg of Compound A with inactive ingredients such as starch, lactose and magnesium stearate can be formulated according to procedures known to those skilled in the art of tablet formulation.
Example 7
Formulations for topical dermatological use:
Cream: 1 mg/g of an angiostatic compound in cream base of purifed water, emulsifying wax, propylene glycol, stearic acid, isopropyl palmitate, synthetic beeswax, polysorbate 60, potassium sorbate, sorbic acid, propyl gallate, citric acid, and sodium hydroxide.
Ointment: 1 mg/g of an angiostatic compound in base of mineral oil and polyethylene.
Example 8
Formulation for suppository:
10-500 mg of an angiostatic compound with the following inactive ingredients: glycerin, butylateal hydroxytoluene, butylated hydroxyanisole, edetic acid, polyethylene glycol, and sodium chloride.
The compositions and methods of the present invention are further illustrated by the
following in vitro and in vivo biological activity examples of the compounds of formula
(I):
Example 9
Representative compounds of the present invention were assayed for their efficacy in inhibiting endothelial cell proliferation. Briefly, human umbilical vein endothelial cells (HUVEC) were seeded in 6-well plates at a density of 2500/cm . At mid-log phase the
cells were treated with a test compound or vehicle control. Forty-eight (48) hours later the cells were detached from the plate and counted using a coulter counter. Viability tests were conducted using trypan blue. The data is expressed as percent inhibition based on the control number of endothelial cells counted. The results are illustrated in Table 1 below:
TABLE 1
The data of Table 2 demonstrates the endothelial cell anti-proliferative efficacy of representative compounds of the present invention, as compared to naproxen and vitamin E.
Example IQ
Representative compounds of the present invention were assayed for their efficacy in inhibiting 3H-thymidine uptake in DNA as a measure of DNA synthesis (R.I. Freshney, Culture of Animal Cells. 3rd Edition, John Wiley and Sons, N.Y., N.Y., pages 277-278 (1994)). Briefly, human lung microvascular endothelial cells in mid-log phase were exposed to either a representative compound of the present invention or the vehicle (1.0% DMSO) for 18 hours. Cells were then incubated with H-thymidine for another 6 hours. DNA synthesis was stopped by the addition of cold 5% TCA solution and the relative synthesis assessed by measuring H-thymidine incoφorated into the acid-insoluble product. The data is expressed as percent inhibition of uptake based on tritium counts in the vehicle control reactions. The results are presented in Table 2 below:
TABLE 2
The data of Table 2 demonstrates the efficacy of representative compounds of the present invention in inhibiting endothelial cell proliferation based on the inhibition of DNA synthesis.
Example 11
Representative compounds of the present invention were assayed for their efficacy in inhibiting angiogenesis in a chorioallantoic membrane (CAM) model (See, McNatt, et al., Angiostatic Activity and Metabolism ofCortisol in The Chorioallantoic Membrane (CAM) of the Chick Embryo, Journal of Steriod Biochemistry and Molecular Biology, volume 42, No. 7, pages 687-693 (1992)). Briefly, 10 μg of the test compound or reference compound (tetrahydrocortisol) were suspended in a liposome/agarose bead and placed on the CAM of a 5-6 day chicken embryo. Following 2 days of incubation, the CAMs were scored for relative angiostatic activity by comparing percent responding embryos per nanomole test compound to percent responding embryos for the reference compound. The results are illustrated in Table 3 below:
TABLE 3
As Table 3 demonstrates, representative compounds of the present invention show angiostatic efficacy in the CAM model.
Example 12
Representative compounds of the present invention were assayed for their efficacy in inhibiting angiogenesis in vivo, in a rabbit model of lipopolysaccharide (LPS) induced corneal neovascularization. Briefly, the test compound and LPS (a stimulus for initiating neovascularization) are incoφorated into separate Elvax-40 pellets as described in D.
BenEzra, The Rabbit Cornea. A Model for the Study of Angiogenic Factors, in "Ocular
Circulation and Neovascularization, Documenta Opthalmalogia. Proceedings Series 50, pages 335-340 (1987) and D. BenEzra, Thrombospondin and In Vivo Angiogenesis Induced by Basic Fibroblast Growth Factor or Lipopolysaccharide, Investigative Opthalmology and Visual Sciences, volume 34, No. 13, pages 3601-3608 (1993), which are surgically implanted into rabbit cornea. The area covered by new vessel formation in response to LPS is measured and suppression of neovascularization by test compounds is estimated at the end of the test period. The data is expressed as a relative area units in relation to the Elvax control (100). The results are illustrated in Table 4 below:
TABLE 4
The data of Table 4 demonstrate the efficacy of representative compounds of the present
invention in in vivo inhibition of neovascularization.
Some of the compounds of the present invention may contain a nonsteroidal anti-
inflammatory agent (NSAIA) component, and others may contain a calcium channel
blocker (flunarizine) component. These individual moieties may add additional pharmaceutical benefit to the angiostatic efficacy of the compounds of the present
invention.
The compounds of the present invention are synthesized by known methods in the
art. Compounds containing a non-steroidal anti-inflammatory agent (flurbiprofen or
naproxen) can be made by methods illustrated in Scheme 1 and 2, and Examples 13-16.
Compounds containing a flunarizine moiety may be made by methods disclosed in
commonly assigned PCT Patent Publication No. WO/9515958, the entire contents of which
are hereby incoφorated by reference. Other compounds of the present invention are
commercially available from: Sigma Chemical Co. (St. Louis, Missouri) and Aldrich
Chemical Co. (Milwaukee, Wisconsin).
Scheme 1
A-OH + H-X-(CH2)n-Y-(CH2)m-Z — > A-X-(CH2)n-Y-(CH2)πι-Z (eq. l)
11 III I
A-OH — > A-Cl + H-X-(CH2)n-Y-(CH2)m-Z — > A-X-(CH2)n-Y-(CH2)m-Z (eq.2) II IV III I
A-OH — > A-0"M+ + L-(CH2)n-Y-(CH2)π,-Z— >A-0-(CH2)n-Y-(CH2)m-Z (eq. 3)
II V L=C1, BR, I, OMs, OTs I
VI
A-OH — ^ A-O M+ + Br-CH2-C(0)OEt — > A-0-CH2-C(0)OEt + II V VII
H-NR-(CH2)n-Y-(CH2)m-Z — > A-NR-(CH2)n-Y-(CH2)m-Z (eq. 4)
VIII I
The conversion of the carboxylic acid containing nonsteroidal anti-inflammatory agents (II) to esters or amides (I) may be carried out by the following methods:
(i) As illustrated in equation 1 above, carboxylic acids (II) may be reacted with the appropriate amine or alcohol derivative (III) in the presence of a coupling reagent, such as dicyclohexylcarbodiimide or l-(3-dimethylaminopropyl)-3-ethyl carbodiimide HCI, and 4-dimethylamine pyridine or 1-hydroxybenzotriazole, in an inert organic solvent, such as acetonitrile or tetrahydrofuran, and at a temperature from 0°C to 50°C.
(ii) As illustrated in equation 2 above, carboxylic acids (II) may be converted to acid chlorides (IV) by reacting them with a reagent such as thionyl chloride or oxalyl chloride, in the presence of an inert solid or neat, at a temperature from 0°C to 80°C. The resulting acid chloride (IV) may be reacted with the desired amine or alcohol (III) in an inert solvent such as tetrahydrofuran, in the presence of pyridine or a tertiary amine, such as triethylamine.
W
(iii) As illustrated in equation 3 above, esters (I) may be formed by reacting carboxylate anions (V), formed by reacting the carboxylic acid (II) with a base such as sodium hydride, with a halide (iodide, bromide, chloride) or sulfonate (mesylate, tosylate) (VI), in a solvent such as acetonitrile or dimethylformamide, at a temperature from 0°C to 100°C.
(iv) As illustrated in equation 4 above, amides (I) may be prepared by reacting carboxylate anions (V), formed by reacting carboxylic acid (II) with a base such as sodium hydride, with ethyl bromoacetate. The resulting ester (VII) is reacted with the desired amine (VIII), neat or in an inert solvent, such as acetonitrile or dimethylformamide, at a temperature from 0°C to 100°C.
The intermediate compounds (X) of Scheme 2 below, which can be used as compounds (III) and (VIII), were prepared using the general methods described in Journal of Organic Chemistry, volume 54, pages 3282-3292, (1989). The nitrile (IX) can be reduced using a reagent such as lithium aluminum hydride to afford the amine (X), which may be isolated as the hydrochloride salt.
The use of certain protecting groups and deprotection steps may be necessary, as will be appreciated by those skilled in the art.
Scheme 2
Compounds of formula (I) may exist as mixtures of stereoisomers. The preparation of the individual stereoisomers may be effected by preparing and resolving the acids (II), by known methods, and then using a single stereoisomer as starting material. Compounds
(III), (VI) and (VIII) may be prepared as single stereoisomers from compounds of formula (XIa-b), shown in Table 5 below, using known methods:
Table 5
XL Xi,
wherein:
W is (CH2)p-Q; p is 0-1 ; Q is CH2OH or CO2H;
R' is H, C(O)R, C(O)NR2, PO3 ' , or SO3 " ; and R" is H or C,-C6 alkyl.
The alcohols (XIa-b) may be resolved by forming esters with optically active carboxylic acids, separating the diastereomers, and then hydrolyzing the resolved diastereomers. The corresponding carboxylic acids (XIa-b) may be resolved by forming an ester with an optically active alcohol, separating the diastereomers, and then hydrolyzing the resolved diastereomers. Or, the carboxylic acids (XIa-b) may be resolved by forming an amine salt with an optically active amine. Separation by recrystallization and neutralization of the resolved carboxylic acid salt may be utilized to provide the resolved carboxylic acid. Resolution of the esters and amides (I) may also be effected using chromatographic techniques known to those skilled in the art.
The amines of formula (I), where Y is NR, may be converted to amine salts by reacting the amine with acids of sufficient strength to produce an organic or inorganic salt.
The pharmaceutically acceptable anions include: acetate, bromide, chloride, citrate, maleate, fumarate, mesylate, phosphate, sulfate and tartrate.
Methods of synthesizing the compounds formula (I) are further illustrated by the following examples:
Example 13
Synthesis of N-[(6-hvdroxv-2.5.7.8-tetramethvl-3.4-dihvdro-2H-l -benzo[l ,2-h]pyran-2- vnmethvl] 2-(6-methoxy-2-naphthvnpropionamide
The intermediate, (6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-l -benzo[l,2-b]pyran-2- yl)methylamine, was first synthesized:
A 1 molar (M) ethereal solution of lithium aluminum hydride (Aldrich, 32.4 mL, 32.43 mmol) was added slowly over a 5 minute period to a chilled, (4-6°C) stirring solution of (2- cyano-6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H- 1 -benzof 1 ,2-b]pyran in tetrahydrofuran (50 mL). After 2 hours, the reaction mixture was quenched by the slow sequential addition of 10% aqueous tetrahydrofuran (30 mL), 15% sodium hydroxide (10 mL) and then water (20 mL), while stirring. The resulting suspension was filtered through celite, and the celite pad was washed with ethyl ether (400 mL). The organic layer was separated, dried (Na2SO4), and concentrated in vacuo. resulting in a residue. A 1 M ethereal solution of hydrochloride was then added to a solution of the residue in ethyl ether (100 mL), a solid formed, and the solid was then collected by filtration and washed with ethyl ether to give 2.31 g (65.4% yield) of a white solid. The product was used crude in the next reaction.
1 H-NMR (DMSO-d6/TMS): 1.15 (s, 3H), 1.75 (t, 2H), 1.99 (s, 6H), 2.01 (s, 3H), 2.54 (t, 2H), 2.98 (s, 2H).
MS (Cl): 236 (m+1).
The hydrochloride salt of (6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-l-benzo[l,2- b]pyran-2-yl)methylamine (0.30 g, 1.10 mmole) and 6-methoxy-α-methyl naphthaleneacetic acid (Aldrich, 0.28 g, 1.21 mmole) were stirred in the presence of dimethylaminopyridine (Aldrich, 0.26 g, 2.20 mmole) and l-(3-dimethylaminopropyl)-3- ethylcarbodiimide hydrochloride (Janssen Chimica-Spectrum, 0.21 g, 1.10 mmole), in tetrahydrofuran (4.0 mL) under an atmosphere of nitrogen. After stirring 17 hours at ambient temperature, the reaction mixture was diluted with ethyl acetate (70 mL), washed with water (2x 15 mL), followed by brine (15 mL) and then dried (sodium sulfate). The mixture was concentrated in vacuo and the residue subjected to flash chromatography (silica gel, 100-50:0-50, v:v, hexanes:ethyl acetate). The appropriate fractions were concentrated in vacuo, and the resulting crystalline foam suspension was then washed in hexanes to give 0.28 g (58.3% yield) of N-[(5-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro- 2H-l-benzopyran-2-yl)methyl]-2-(6-methoxy-2-naphthyl)propionamide as a white amoφhous solid.
Η-NMR (CDCl3) d 1.03-1.08 (d,3H), 1.57-1.64 (m, 6H), 1.70 (t, 2H,). 2.04-2.05 (m, 6H,), 2.48-2.51 (m, 2H), 3.16-3.58 (m, 2H), 3.74 (q, IH), 3.91 (s, 3H), 4.91 (br s, IH), 5.751 (t, IH), 7.01-7.19 (m, 2H), 7.29-7.40 (t, IH), 7.52-7.81 (m, 3H).
Elemental Analysis: Calculated for C28H33NO4 Calculated: C, 75.14; H, 7.43; N, 3.13. Found: C, 75.04; H, 7.50; N, 2.97. Melting point: 67-70°C.
Example 14
Synthesis of 2-(6-hvdroxv-2.5.7.8-tetramethvl-3.4-dihvdro-2H-benzo[1.2-b]pyran-2ynethyl 2-(6-methQxy-2-n,aphthyl)prQpiQhate
A solution of 1 ,3-dicyclohexylcarbodiimide (Aldrich, 0.89 g, 4.31 mmol) in acetonitrile (25 mL), was added dropwise to a stirring slurry of (+)-6-methoxy-a-methyl-2- naphthaleneacetic acid (Aldrich, 0.90 g, 3.91 mmol), 2-hydroxy-2,5,7,8-tetramethyl-3,4-
dihydro-2H-benzo[l ,2-b]pyran-2yl)ethanol (0.98 g, 3.91 mmol, USP 5,266,709 column 45) and 1-hydroxybenzotriazole hydrate (Aldrich, 0.59 g, 4.31 mmol), in acetonitrile (50 mL). After stirring for 18 hours, the reaction mixture was concentrated in vacuo. The residue was partitioned between water (30 mL) and methylene chloride (30 mL). The layers were separated, and the aqueous layer was extracted with methylene chloride (2 x 20 mL). The combined organic extracts were washed with water (20 mL), then dried (magnesium sulfate) and concentrated in vacuo. Flash chromatography (silica gel, 2:8, v:v, ethyl acetate :hexanes) of the residue afforded a white solid upon the concentration of the appropriate fractions. The white solid was recrystallized from an ethyl acetate-hexanes mixture to give 0.60 g (33.1% yield) of 2-(6-hydroxy-2,5,7,8-tetramethyl-3.4-dihydro-2H- benzo[l,2-b]pyran-2yl)ethyl 2-(6-methoxy-2-naphthyl)propionate, a mixture of diastereomers, as a white solid.
Η NMR (CDC13) d 1.1 (d, 3H), 1.6-1.5 (m, 3H), 1.6 (m, 2H), 1.9 (m,2H). 2.0 (s, 6H), 2.1 (s, 3H), 2.4 (t, 2H), 3.8 (q, 2H), 3.9 (s, 3H), 4.2 (s. IH), 4.1-4.4 (m, 2H), 7.1 -7.7 (m,6H).
Elemental Analysis: Calculated for C29H34O5 Calculated: C, 75.30; H, 7.41. Found: C, 75.24; H. 7.46. Melting Point: 99.5-101.5°C.
Example 15
Synthesis of 2-r5-hvdroxy-2.4.6.7-tetramethyl-3.4-dihvdro-hen7.o[L2-blfuran-2ynethyl 2- r6-methoxy-2-naphthvnpropionate
A solution of 2-(5-hydroxy-2,4,6,7-tetramethyl-2,3-dihydrobenzo[l ,2-b]furan-2-yl)ethanol (1.30 g, 5.51 mmol) and 6-methoxy-α-methyl naphthaleneacetic acid (Aldrich, 1.39 g, 6.06 mmol) was stirred in the presence of dimethylaminopyridine (0.67 g, 5.51 mmol) and l-(3- dimethylaminopropyI)-3-ethyl-carbodiimide hydrochloride (1.06 g, 5.51 mmol), in tetrahydrofuran (25 mL). The reaction mixture was stirred at ambient temperature under nitrogen for 24 hours, diluted with ethyl acetate (150 mL), washed with water (2x 40 mL)
and then brine (30 mL). The organic extract was dried (sodium sulfate) and concentrated in vacuo. The residue was subjected to flash chromatography (silica gel, 100-50:0-50, v:v, hexanesxthyl acetate), and the appropriate fractions were combined to give 1.84 g (74.5% yield) of a foam residue. Fractional crystallization and recrystallization from methylene chloride-hexanes gave 0.40 g (13.0% yield) of white solid.
Η-NMR (CDC13): 1.34 (s, 3H), 1.54-1.57 (d, 3), 1.99 (t, 2H), 2.01 (s, 3H), 2.05 (s, 3H), 2.10 (s, 3), 2.73-2.81 (d, 1), 2.90-2.97 (d, 1), 3.77-3.89 (q, IH), 3.91 (s, 3H), 4.102 (s, IH, 4.165-4.29 (m, 2H), 7.10-7.16 (m, 2H), 7.35-7.40 (m, IH), 7.64-7.70 (m, 2H).
Elemental Analysis: Calculated for C28H32O5 0.1 mole CH2C12. Calculated: C, 73.84; H, 7.10. Found: C, 73.85, 73.83; H, 7.12. Melting point: 129.5-131°C.
Example W
Synthesis of 2-(6-hvdroxy-2.5.7.8-tetramethvl-3.4-dihvdro-2H-henzo [1.2-b]pyran- 7.y1)ethyl 2-(3-fluoro-4-phenyl-ρhenvnpropionate
The intermediate, 2-(6-benzyloxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-benzo[l,2-b]pyran-
2yl)ethyl 2-(3-fluoro-4-phenyl-phenyl)propionate, was first synthesized:
A solution of flubiprofen (Sigma, 2.0 g, 8.2 mmol), 2-(6-benzyloxy-2,5,7,8-tetramethyl- 3,4-dihydro-2H-benzo[l,2-b]pyran-2-yl)ethanol (2.4 g, 8.2 mmol) 1-hydroxybenzotriazole hydrate (Aldrich, 2.4 g, 13.9 mmol) and l-(3-dimethylaminopropyl)-3-ethyl-carbodiimide hydrochloride (Aldrich, 2.8 g, 12.3 mmol), in acetonitrile (40 ml), was stirred at ambient temperature. After 72 hours, the reaction mixture was concentrated in vacuo and the residue partitioned between water and methylene chloride. A solid formed which was removed by filtration and discarded. The layers were separated and the aqueous layer was extracted with methylene chloride (2 x 25 ml). The combined organic extracts were then dried (magnesium sulfate) and concentrated in vacuo. The residue was chromatographed
(silica gel, 2:8, v:v, ethyl acetate:hexane). Concentration of the appropriate fractions afforded 3.0 g (64% yield, mixture of stereoisomers) of the product as a clear oil.
Η NMR (CDC13) d: 1.23-1.27 (m, 3H), 1.53-1.57 (m, 3H), 1.75 (m, 2H), 1.95 (m, 2H), 2.08 (s, 3H), 2.14 (s, 3H), 2.21 (s, 3H), 2.55 (t, 3H), 3.75 (m, 2H), 4.3 (m, IH), 4.65 (s, 2H), 7.1-7.7 (m, 13H).
A solution of 2-(6-benzyloxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-benzo
[l,2-b]pyran-2yl)ethyl 2-(3-fluoro-4-phenyl-phenyl)propionate in ethyl acetate was treated with 10% palladium on charcoal (Aldrich, 0.5 g). The resulting mixture was hydrogenated on a Parr Apparatus [initial pressure 60 pounds/inch2 (psi)]. After 18 hours, the reaction mixture was filtered, and the resulting solution concentrated in vacuo. The residue was subjected to flash chromatography (silica gel, 2:8, v:v, ethyl acetate:hexane). Concentration of the appropriate fractions afforded a clear oil. Hexane was added to the oil and a white solid formed upon standing. The white solid was collected by filtration to afford 0.91 g (36% yield) of 2-6-hydroxy-2,5,7,8-tetra methyl-,4-dihydro-H-benzo[I ,2-b]pyran-yl)ethyl 2-(3-fluoro-4-phenyl-phenyl) propionate as a mixture of stereoisomers.
Η NMR (CDC13) d: 1.22- 1.23 (m, 3H), 1.51 -1.55 (m, 3H), 1.65-1.8 (m, 2H), 1.85-2.00 (m, 2H), 2.08 (s, 6H), 2.14 (s, 3H), 2.57 (t, 2H), 3.75 (q, IH), 4.1-4.5 (m, 2H), 7.10-7.65 (m, 8H).
Elemental Analysis: Calculated for C30H33FO4. Calculated: C,75.60; H, 6.98. Found: C/75.69; H,7.01. Melting point: 85-87°C.
The invention in its broader aspects is not limited to the specific details shown and described above. Departures may be made from such details within the scope of the
accompanying claims without departing from the principles of the invention and without
sacrificing its advantages.
Claims
What is claimed is:
1. A composition for the treatment of pathological neovascularization
comprising an effective amount of a compound according to formula (I):
R is H, C,-C6 alkyl or C3-C6 cycloalkyl;
Y is H, C,-C6 alkyl, C3-C6 cycloalkyl, O, NR, C(R)2 , CH(OH) or S(O)„. ; n" is 0 to 2;
R' is H, C(O)R, C(O)N(R)2, PO3 " , SO3 " or HO2C(CH2)2(C=O)— ;
R" is H or C,-C6 alkyl;
R3 is H, C,-C6 alkyl, (CH2)q(OH), — (C=O)O(CH2)qCH3 or
Z, if present, is H, CrC6 alkyl, C3-C6 cycloalkyl, or selected from the group consisting of:
wherein:
D is O or NR; and
E and E' are independently H, F or Cl; and pharmaceutically acceptable salts thereof.
2. The composition according to Claim 1, wherein: R is H, R' is H; R" is CH3;
R ,3JisCH3;andYisC,-C2alkyl.
3. The composition according to Claim 1, wherein Z is:
The composition according to Claim 1 , wherein Z is:
5. The composition according to Claim 1, wherein Z is:
6. The composition according to Claim 2, wherein Z is:
The composition according to Claim 2, wherein Z is:
8. The composition according to Claim 2, wherein Z is:
9. The composition according to Claim 1 , wherein the compound is selected from the group consisting of:
10. The composition according to Claim 1 , wherein the composition comprises a physiologically balanced irrigating solution.
1 1. The composition according to Claim 1 , wherein the composition is used to treat glaucoma filtration surgery bleb failure, pterygium, hyperkeratosis, cheloid formation and polyp formation.
12. A method for treating pathological neovascularization which comprises administering to a human patient an effective amount of a pharmaceutical composition comprising a compound according to formula (I):
wherein: n is 1 or 2;
R is H, C,-C6 alkyl or C3-C6 cycloalkyl;
Y is H, C,-C6 alkyl, C3-C6 cycloalkyl, O, NR, C(R)2 , CH(OH) or S(O)n. ; n' is 0 to 2;
R' is H, C(O)R, C(O)N(R)2, PO3\ SO3 " or HO2C(CH2)2(C=O)— ;
R" is H or C,-C6 alkyl;
R3 is H, C,-C6 alkyl, (CH2)q(OH), — (C=O)O(CH2)qCH3 or
Z, if present, is H, C,-C6 alkyl, C3-C6 cycloalkyl, or selected from the group consisting of:
wherein:
D is O or NR; and
E and E' are independently H, F or Cl; and pharmaceutically acceptable salts thereof.
13. The method according to Claim 12, wherein: R is H, R' is H; R" is CH3; R3 is CH3; and Y is CrC2 alkyl.
14. The method according to Claim 12, wherein Z is:
15. The method according to Claim 12, wherein Z is:
17. The method according to Claim 13 , wherein Z is:
18. The method according to Claim 13, wherein Z is:
19. The method according to Claim 13, wherein Z is:
20. The method according to Claim 12, wherein the compound is selected from the group consisting of:
21. The method according to Claim 12, wherein the composition comprises a physiologically balanced irrigating solution.
22. The method according to Claim 12, which comprises administering the composition to a human patient to treat glaucoma filtration surgery bleb failure, pterygium, hyperkeratosis, cheloid formation and polyp formation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU31236/97A AU3123697A (en) | 1996-05-09 | 1997-05-08 | Angiostatic compounds |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US644,018 | 1996-05-09 | ||
US08/644,018 US5798356A (en) | 1995-08-07 | 1996-05-09 | Angiostatic compounds |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997041852A1 true WO1997041852A1 (en) | 1997-11-13 |
Family
ID=24583103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/008066 WO1997041852A1 (en) | 1996-05-09 | 1997-05-08 | Angiostatic compounds |
Country Status (3)
Country | Link |
---|---|
US (1) | US5798356A (en) |
AU (1) | AU3123697A (en) |
WO (1) | WO1997041852A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000035420A2 (en) * | 1998-12-17 | 2000-06-22 | Alcon Laboratories, Inc. | Stable surgical irrigating solutions |
EP1115398A1 (en) * | 1998-09-23 | 2001-07-18 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
WO2007076467A2 (en) * | 2005-12-23 | 2007-07-05 | Alcon, Inc. | Use of anecortave acetate as an adjunct during filtration bleb surgery |
US7300954B2 (en) | 1998-09-23 | 2007-11-27 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
US7312232B2 (en) | 1998-09-23 | 2007-12-25 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
WO2008020031A1 (en) * | 2006-08-16 | 2008-02-21 | Action Medicines, S.L. | Use of 2,5-dihydroxybenzene derivatives for the treatment of angiogenic diseases |
US7482462B2 (en) | 2001-10-05 | 2009-01-27 | Amarylla Horvath | Acylsulfonamides as inhibitors of steroid sulfatase |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6433007B1 (en) | 1998-12-17 | 2002-08-13 | Alcon Manufacturing, Ltd. | Methods for the prevention and treatment of post-surgical complications |
US6653346B1 (en) | 2002-02-07 | 2003-11-25 | Galileo Pharmaceuticals, Inc. | Cytoprotective benzofuran derivatives |
US7078541B2 (en) * | 2002-02-07 | 2006-07-18 | Galileo Pharmaceuticals, Inc. | Benzofuran derivatives |
US20120253029A1 (en) | 2002-06-18 | 2012-10-04 | Pasqua Anna Oreste | Process for the preparation of highly o-sulfated epimerized derivatives of k5 polysaccharide and intermediates therein |
MXPA04012721A (en) * | 2002-06-18 | 2005-08-15 | Glycores 2000 Srl | Process for the manufacture of n-acyl-(epi)k5-amine-o-sulfate-derivatives and products thus obtained. |
CN1684701B (en) | 2002-07-30 | 2012-10-17 | 奥默罗斯公司 | Ophthalmologic irrigation solutions and method |
AU2013201465B2 (en) | 2012-10-24 | 2016-03-03 | Rayner Surgical (Ireland) Limited | Stable preservative-free mydriatic and anti-inflammatory solutions for injection |
TWI705812B (en) | 2014-12-01 | 2020-10-01 | 奥默羅斯公司 | Anti-inflammatory and mydriatic intracameral solutions for inhibition of postoperative ocular inflammatory conditions |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0413668A2 (en) * | 1989-08-18 | 1991-02-20 | Biomedica Foscama Industria Chimico-Farmaceutica S.P.A. | New 2,3-dihydro-5-oxy-4,6,7-trimethylbenzofuranes 2-(RS)-substitutes, useful as antioxidizing pharmaceutical products having mucoregolating and anti-ischemic properties |
US5114957A (en) * | 1990-05-08 | 1992-05-19 | Biodor U.S. Holding | Tocopherol-based antiviral agents and method of using same |
EP0572190A1 (en) * | 1992-05-26 | 1993-12-01 | Santen Pharmaceutical Co., Ltd. | Ophthalmic compositions containing vitamin E or ester thereof as an active ingredient |
US5424321A (en) * | 1993-12-08 | 1995-06-13 | Alcon Laboratories, Inc. | Compounds having both potent calcium antagonist and antioxidant activity and use thereof as cytoprotective agents |
WO1995015958A1 (en) * | 1993-12-08 | 1995-06-15 | Alcon Laboratories, Inc. | Compounds having both potent calcium antagonist and antioxidant activity and use thereof as cytoprotective agents |
EP0732329A1 (en) * | 1993-12-07 | 1996-09-18 | Shudo, Koichi, Prof. Dr. | Chroman derivative |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4550022A (en) * | 1981-10-05 | 1985-10-29 | Alcon Laboratories, Inc. | Tissue irrigating solution |
PH26256A (en) * | 1988-08-12 | 1992-04-01 | Fujisawa Pharmaceutical Co | Oxaspiro [2,5] octane derivative |
US5371078A (en) * | 1988-10-31 | 1994-12-06 | Alcon Laboratories, Inc. | Angiostatic steroids and methods and compositions for controlling ocular hypertension |
US5156852A (en) * | 1989-04-20 | 1992-10-20 | La Haye Laboratories, Inc. | Composition and method for combating macular degeneration |
WO1991006668A1 (en) * | 1989-10-27 | 1991-05-16 | The Du Pont Merck Pharmaceutical Company | Monoclonal antibodies to basic fibroblast growth factor that inhibit its biological activity |
US5602183A (en) * | 1991-03-01 | 1997-02-11 | Warner-Lambert Company | Dermatological wound healing compositions and methods for preparing and using same |
WO1993002192A1 (en) * | 1991-07-15 | 1993-02-04 | Repligen Corporation | Modified pf4 compositions and methods of use |
WO1993016716A1 (en) * | 1992-02-24 | 1993-09-02 | Northwestern University | Method and composition for inhibiting angiogenesis |
US5431907A (en) * | 1994-08-03 | 1995-07-11 | Abelson; Mark B. | Treatment of vascular disorders of the posterior segment of the eye by topical administration of calcium channel blocking agents |
US5643943A (en) * | 1994-12-23 | 1997-07-01 | Alcon Laboratories, Inc. | Systemic administration of esters and amides of antioxidants which may be used as antioxidant prodrug therapy for oxidative and inflammatory pathogenesis |
-
1996
- 1996-05-09 US US08/644,018 patent/US5798356A/en not_active Expired - Fee Related
-
1997
- 1997-05-08 AU AU31236/97A patent/AU3123697A/en not_active Abandoned
- 1997-05-08 WO PCT/US1997/008066 patent/WO1997041852A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0413668A2 (en) * | 1989-08-18 | 1991-02-20 | Biomedica Foscama Industria Chimico-Farmaceutica S.P.A. | New 2,3-dihydro-5-oxy-4,6,7-trimethylbenzofuranes 2-(RS)-substitutes, useful as antioxidizing pharmaceutical products having mucoregolating and anti-ischemic properties |
US5114957A (en) * | 1990-05-08 | 1992-05-19 | Biodor U.S. Holding | Tocopherol-based antiviral agents and method of using same |
EP0572190A1 (en) * | 1992-05-26 | 1993-12-01 | Santen Pharmaceutical Co., Ltd. | Ophthalmic compositions containing vitamin E or ester thereof as an active ingredient |
EP0732329A1 (en) * | 1993-12-07 | 1996-09-18 | Shudo, Koichi, Prof. Dr. | Chroman derivative |
US5424321A (en) * | 1993-12-08 | 1995-06-13 | Alcon Laboratories, Inc. | Compounds having both potent calcium antagonist and antioxidant activity and use thereof as cytoprotective agents |
WO1995015958A1 (en) * | 1993-12-08 | 1995-06-15 | Alcon Laboratories, Inc. | Compounds having both potent calcium antagonist and antioxidant activity and use thereof as cytoprotective agents |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7300954B2 (en) | 1998-09-23 | 2007-11-27 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
US7718814B2 (en) | 1998-09-23 | 2010-05-18 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
EP1115398A1 (en) * | 1998-09-23 | 2001-07-18 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
EP1115398A4 (en) * | 1998-09-23 | 2002-10-16 | Res Dev Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
US7312232B2 (en) | 1998-09-23 | 2007-12-25 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
US8664264B2 (en) | 1998-09-23 | 2014-03-04 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
US7608638B2 (en) | 1998-09-23 | 2009-10-27 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
US8148424B2 (en) | 1998-09-23 | 2012-04-03 | Research Development Foundation | Tocopherols, tocotrienols, other chroman and side chain derivatives and uses thereof |
WO2000035420A3 (en) * | 1998-12-17 | 2000-10-19 | Alcon Lab Inc | Stable surgical irrigating solutions |
WO2000035420A2 (en) * | 1998-12-17 | 2000-06-22 | Alcon Laboratories, Inc. | Stable surgical irrigating solutions |
US7482462B2 (en) | 2001-10-05 | 2009-01-27 | Amarylla Horvath | Acylsulfonamides as inhibitors of steroid sulfatase |
WO2007076467A2 (en) * | 2005-12-23 | 2007-07-05 | Alcon, Inc. | Use of anecortave acetate as an adjunct during filtration bleb surgery |
WO2007076467A3 (en) * | 2005-12-23 | 2007-08-16 | Alcon Inc | Use of anecortave acetate as an adjunct during filtration bleb surgery |
WO2008020031A1 (en) * | 2006-08-16 | 2008-02-21 | Action Medicines, S.L. | Use of 2,5-dihydroxybenzene derivatives for the treatment of angiogenic diseases |
Also Published As
Publication number | Publication date |
---|---|
US5798356A (en) | 1998-08-25 |
AU3123697A (en) | 1997-11-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1997041844A1 (en) | Combinations of angiostatic compounds | |
EP1378247B1 (en) | Visual function disorder improving agents | |
EP0799219B1 (en) | Esters and amides of non-steroidal anti-inflammatory carboxylic acids which may be used as anti-oxidants, 5-lipoxygenase inhibitors and non-steroidal anti-inflammatory products | |
US5798356A (en) | Angiostatic compounds | |
US6242480B1 (en) | Ophthalmic viscoelastic compositions | |
US5998465A (en) | Esters of non-steroidal anti-flammatory carboxylic acids | |
EP0682664B1 (en) | Compounds having both potent calcium antagonist and antioxidant activity and use thereof as cytoprotective agents | |
US20110045065A1 (en) | Substance having antioxidant, geroprotective and anti-ischemic activity and method for the preparation thereof | |
JP2005533810A (en) | Novel anticholesterol composition and method of use thereof | |
EP2036548A1 (en) | Prevention and treatment of inflammation-induced and/or immune-mediated bone loss | |
JP4122060B2 (en) | Therapeutic treatment for eye diseases related to VEGF | |
JP2013531063A (en) | Bifunctional Rho kinase inhibitory compounds, compositions and uses thereof | |
US7335650B2 (en) | Composition | |
US20030225051A1 (en) | Oestrogen-17-sulphamates as inhibitors of steroid sulphatase | |
JP5484353B2 (en) | Pharmaceutical composition for the treatment and prevention of glaucoma | |
US5719167A (en) | Angiostatic compounds | |
JP2013502440A (en) | Treatment of macular degeneration | |
WO2009116076A2 (en) | Sterile opthalmic preparations and a process for preparation thereof | |
US5929111A (en) | A-seco steroids effective at treating ophthalmic pathological neovascularization and controlling intraocular pressure | |
HU210257B (en) | Process for the preparation of pharmaceutical composition with anti-herpes effect containing castanospermine esters | |
US5925673A (en) | Benzofurans and benzopyrans as cytoprotective agents | |
WO2005007161A1 (en) | Remedy for pruritus comprising piperidine derivative as the active ingredient | |
JP2005047909A (en) | Remedy for pruritus containing piperidine derivative as active ingredient | |
WO1997000068A1 (en) | Corneal clouding inhibitor | |
JP2985007B2 (en) | Angiogenesis inhibitor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU CA JP |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 97540255 Format of ref document f/p: F |
|
NENP | Non-entry into the national phase |
Ref country code: CA |
|
122 | Ep: pct application non-entry in european phase |