Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUSRE28972 E
Publication typeGrant
Application numberUS 05/637,585
Publication dateSep 21, 1976
Filing dateDec 4, 1975
Priority dateJul 10, 1969
Publication number05637585, 637585, US RE28972 E, US RE28972E, US-E-RE28972, USRE28972 E, USRE28972E
InventorsKarl-Heinz Weber, Herbert Merz, Karl Zeile, Rolf Giesemann, Peter Danneberg
Original AssigneeBoehringer Ingelheim Gmbh
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
5-Aryl-1H-1,5-benzodiazepine-2,4-diones
US RE28972 E
Abstract
5-Aryl-1H-1,5-benzodiazepine-2,4-diones of a formula selected from the group consisting of ##SPC1##
Wherein ##SPC2##
-- A -- X
wherein R1 is allyl, methylallyl, dimethylallyl, chloroallyl, cyclohexyl, cycloalkylmethyl, cycloalkenylmethyl of 4 to 7 carbon atoms, phenyl, tolyl, xylyl, methoxyphenyl, dimethoxyphenyl, halophenyl, phenylalkyl of 7 to 8 carbon atoms, pyridyl or
--A --X
where A is straight or branched alkylene of 1 to 4 carbon atoms, and
X is hydroxyl, alkoxy, acyloxy, dialkylamino of 2 to 4 carbon atoms, or a 5- to 6-membered nitrogen-containing heterocyclic ring linked to A through a ring nitrogen atom,
R2 is hydrogen or methyl,
R3 is naphthyl, pyrimidyl, thienyl, pyridyl, methylpyridyl or halopyridyl,
R4 is hydrogen, methyl, methoxy, trifluoromethyl, cyano, halogen, lower alkanoyl or (lower alkoxy of 1 to 2 carbon atoms)-carbonyl,
R5 is hydrogen, methyl, ethyl, methoxy, trifluoromethyl, cyano, nitro, halogen, lower alkanoyl or lower alkoxy-carbonyl,
R6 is hydrogen, methyl, ethyl, methoxy or halogen,
R7 is cyano.[.,.]. .Iadd.or .Iaddend.lower alkanoyl .[.or lower alkoxycarbonyl.].,
R8 is cyano, nitro, lower alkanoyl or lower alkoxycarbonyl,
R9 is hydrogen, methyl, ethyl, methoxy or halogen, and
R10 is hydrogen, methyl, methoxy, trifluoromethyl or halogen,
Useful as psychosedatives and anticonvulsives in warm-blooded animals.
Images(11)
Previous page
Next page
Claims(8)
We claim:
1. A compound of a formula selected from the group consisting of ##SPC32##
wherein
R1 is alkyl of 1 to 4 carbon atoms, hydroxyethyl, hydroxypropyl, acetoxyethyl, cyclohexyl, benzyl or phenyl,
R2 is naphthyl, pyrimidyl, thienyl, pyridyl, methyl-pyridyl or chloropyridyl,
R3 is chlorine, bromine, trifluoromethyl or cyano,
R4 is cyano.[.,.]. .Iadd.or .Iaddend.acetyl .[.or methoxycarbonyl.].,
R5 is cyano, nitro, acetyl or methoxycarbonyl, and
R6 is halogen or trifluoromethyl.
2. A compound of a formula selected from the group consisting of ##SPC33##
and ##SPC34##
wherein
R1 is straight or branched alkyl of 1 to 3 carbon atoms or hydroxyalkyl of 2 to 3 carbon atoms,
R3 is pyridyl,
R4 is halogen, trifluoromethyl or cyano,
R5 is hydrogen, trifluoromethyl, nitro, cyano or halogen,
R8 is cyano or nitro, and
R10 is halogen or trifluoromethyl.
3. A compound according to claim 1, which is 7-chloro-1-methyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione.
4. A compound according to claim 1, which is 7-cyano-1-methyl-5-phenyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione.
5. A compound according to claim 1, which is 5-(2'-acetyl-phenyl)-7-chloro-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione.
6. A compound according to claim 1, which is 1-methyl-5-(2'-pyridyl)-7-trifluoromethyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione.
7. A compound according to claim 1, which is 1-ethyl-7-chloro-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione.
8. A compound according to claim 1, which is 7-bromo-1-methyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione.
Description

This invention relates to novel 5-aryl-1H-1,5-benzodiazepine-2,4-diones, as well as to a method of preparing these compounds.

More particularly, the present invention relates to 5-aryl-1H-1,5-benzodiazepine-2,4-diones of a formula selected from the group consisting of ##SPC3##

And ##SPC4##

Wherein

R1 is allyl, methylallyl, dimethylallyl, chloroallyl, cyclohexyl, cycloalkylmethyl, cycloalkenylmethyl of 4 to 7 carbon atoms, phenyl, tolyl, xylyl, methoxyphenyl, dimethoxyphenyl, halophenyl, phenylalkyl of 7 to 8 carbon atoms, pyridyl or

--A--X

where

A is straight or branched alkylene of 1 to 4 carbon atoms, and

X is hydroxyl, alkoxy, acyloxy, dialkylamino of 2 to 4 carbon atoms, or a 5- to 6-membered nitrogen-containing heterocyclic ring linked to A through a ring nitrogen atom,

R2 is hydrogen or methyl,

R3 is naphthyl, pyrimidinyl, thienyl, pyridyl, methylpyridyl or halopyridyl,

R4 is hydrogen, methyl, methoxy, trifluoromethyl, cyano, halogen, lower alkanoyl or (lower alkoxy of 1 to 2 carbon atoms)-carbonyl,

R5 is hyrogen, methyl, ethyl, methoxy, trifluoromethyl, cyano, nitro, halogen, lower alkanoyl or lower alkoxy-carbonyl,

R6 is hydrogen, methyl, ethyl, methoxy or halogen,

R7 is cyano.[.,.]. .Iadd.or .Iaddend.lower alkanoyl .[.or lower alkoxycarbonyl.].,

R8 is cyano, nitro, lower alkanoyl or lower alkoxycarbonyl,

R9 is hydrogen, methyl, ethyl, methoxy or halogen, and

R10 is hydrogen, methyl, methoxy, trifluoromethyl or halogen.

The compounds according to the present invention may be prepared by arylation or heteroarylation at the nitrogen atom in 5-position of a 1H-1,5-benzodiazepine-2,4-dione of the formula ##SPC5##

wherein

R1 and R2 have the same meanings as in formulas I, II and III above,

Rn is R4, R7 or R10, as defined above, and

Y is hydrogen, an alkali metal or acyl, with a compound of the formula

X--Rm                                                 (V)

wherein Rm is R3, ##SPC6##

as defined above, and

X is halogen.

The arylation is carried out in the presence of copper powder, a copper-I-salt or a copper-II-salt or a mixture thereof, either by using the aryl halide of the formula V in excess or in a polar aprotic solvent, such as dimethylformamide, dimethylsulfoxide or hexamethylphosphoric acid triamide. If a solvent is used, the aryl halide is merely added in the calculated quantity. The reaction temperature depends on the starting materials employed in each case and lies in general between 90 and 180C. If a compound of the formula II wherein Y is hydrogen or acyl is used, the addition of a suitable organic or inorganic base, such as an alkali metal carbonate, alkali metal bicarbonate or alkali metal alcoholate, preferably of an alkali metal acetate, in molar quantities or in excess is required in order to bind the hydrogen halide formed by the acrylation reaction. If in a compound of the formula I the radical R1 represents a hydroxyalkyl group, the hydroxyl group may subsequently be converted into an alkoxy group by treatment with a diazoalkane in the presence of borofluoride etherate.

If the radical R1 in a compound of the formula I is dialkylaminoalkyl, it is possible to introduce a double bond into the alkyl group by quaternization and splitting off trialkylamine. Furthermore, in a compound of the formula I wherein R1 is alkenyl, the latter may be hydrogenated in known manner.

The 1H-1,5-benzodiazepine-2,4-diones of the formula IV used as starting materials for the preparation of a compound of the formula II are also novel. They may, for instance, be obtained by reaction of a correspondingly substituted 2-nitroaniline with a malonic acid monoalkylester halide, reduction of the formed 2-nitromalonic acid alkyl ester anilide, and cyclization of the 2-aminomalonic acid ethylester anilide according to the following reaction sequence: ##SPC7##

According to the process described above, the following end products may, for instance, be obtained:

7-chloro-1-methyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-methyl-5-(1'-naphthyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-methyl-5-(2'-thienyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-methyl-5-(3'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-5-[5'-chloropyridyl-(2')]-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-methyl-5-[4'-methyl-pyridyl-(2')]-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-methyl-5-(2'-nitrophenyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-5-(2'-cyanophenyl)-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-5-(2'-methoxycarbonyl-phenyl)-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

5-(2'-acetylphenyl)-7-chloro-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

.[.7-methoxycarbonyl-1-methyl-5-phenyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,.].

1-methyl-5-(2'-pyridyl)-7-trifluoromethyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-bromo-1-methyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-methyl-5-(2'-pyrimidyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-cyano-1-methyl-5-phenyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

1-ethyl-8-chloro-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

1-ethyl-7-chloro-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

1-ethyl-7-chloro-5-(3'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-n-propyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

1-n-butyl-7-chloro-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4(3H,5H)-dione,

7-chloro-1-cyclohexyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-(β-hydroxyethyl)-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H).[.-benzodiazepine-2,4-(3H,5H).].-dione,

7-chloro-1-dimethylaminoethyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

8-chloro-1-phenyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

8-chloro-1-phenyl-5-thienyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-bromo-5-(2'-cyanophenyl)-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione

7-bromo-1-methyl-5-(2'-nitrophenyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione

1-methyl-5-(2'-nitrophenyl)-7-trifluoromethyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

5-(2'-cyanophenyl)-1-methyl-7-trifluoromethyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

5-(2'-cyanophenyl)-7-fluoro-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-fluoro-1-methyl-5-(2'-nitrophenyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-isopropyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione

7-acetyl-1-methyl-5-phenyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-dimethylamino-ethyl-5-(2'-nitrophenyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

7-chloro-1-cyclohexyl-5-(2'-nitrophenyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

1-acetoxyethyl-5-(2'-nitrophenyl)-7-trifluoromethyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione,

1-acetoxyethyl-7-chloro-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione.

The following examples further illustrate the present invention and will enable others skilled in the art to understand it more completely. It should be understood, however, that the invention is not limited solely to the particular examples given below.

EXAMPLE 1 7-chloro-1-methyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione

A mixture of 225 gm. (1 mol) of 7-chloro-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione, 147 gm. (1.5 mol) of potassium acetate, 225 gm. (1.6 mol) of o-bromopyridine, 180 gm. of copper powder and 1300 ml. of dimethylformamide was heated for 15 hours at 160C. while stirring. The mixture was vacuum-filtered while hot over a little kieselguhr and washed afterwards with 200 ml. of hot dimethylformamide. Upon cooling, a recrystalline product separated out of the filtrate. 2 liters of semi-concentrated ammonia were stirred into the mixture, stirring was continued for 15 minutes, it was vacuum-filtered, the filter cake was washed with water until free from copper, and the raw product obtained was recrystallized from acetonitrile and subsequently from methylene-chloride-petroleum ether. Yield: 50-55% of theory of the compound of the formula ##SPC8##

having a melting point of 231-233C.

The starting material was obtained as follows: 373 gm. (2 mol) of 2-nitro-4-chloro-N-methylaniline were refluxed with 330 gm. of malonic acid monoethylester chloride in 1500 ml. of benzene for 2-3 hours. After cooling, washing and evaporation, 590 gm. of 2-nitro-4-chloro-N-methylmalonic acid-monoethylester-anilide were obtained. 200 gm. of this ester, upon being hydrogenated in methanol with Raney nickel at 6 atmospheres and 20C., yielded 137 gm. of 2-amino-4-chloro-N-methylmalonic acid ethylester-anilide, m.p. 114-117C. 872.2 gm. of the aminoester were stirred at room temperature into a solution of 81.5 gm. of sodium in 7.25 liters of ethanol. The sodium salt of 7-chloro-1-methyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione precipitated. It was vacuum filtered off, dissolved in 3 liters of water, the solution was acidified with concentrated hydrochloric acid, vacuum filtered, and the filter cake was dried at 100C. in vacuo. Yield: 596 gm (82.5% of theory), m.p. 215-217C.

EXAMPLE 2 1-Methyl-5-(2'-nitrophenyl)-7-trifluoromethyl-1,5-benzodiazepine-2,4-(3H,5H)-dione

26 gm. (0.1 mol) of 1-methyl-7-trifluoromethyl-1,5-benzodiazepine-2,4-(3H,5H)-dione were heated with 13 gm. of potassium acetate, 1 gm. of anhydrous copper sulfate and 350 gm. of o-chloro-nitrobenzene for one hour at 150C. The reaction solution was diluted with methylene chloride, washed with dilute ammonia, sodium hydroxide solution and water, the organic phase was dried, and the solvent evaporated in vacuo. The residue was carefully admixed with petroleum ether, whereby a precipitate was formed, which was recrystallized from methylene chloride/isopropylether. Yield: 30 gm. (80% of theory) of the compound of the formula ##SPC9##

having a melting point of 230-232C.

EXAMPLE 3

Using a procedure analogous to that described in Example 1, 1-methyl-5-(1'-naphthyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 209-211C., of the formula ##SPC10##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and 1-chloro-naphthalene.

EXAMPLE 4

Using a procedure analogous to that described in Example 1, 1-methyl-5-(2'-thienyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 173-174C., of the formula ##SPC11##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-thiophene.

EXAMPLE 5

Using a procedure analogous to that described in Example 1, 1-methyl-5-(3'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 164-166C., of the formula ##SPC12##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and m-bromo-pyridine.

EXAMPLE 6

Using a procedure analogous to that described in Example 1, 1-methyl-5-[5'-chloro-pyridyl-(2')]-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 216-217C., of the formula ##SPC13##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and 2,5-dichloro-pyridine.

EXAMPLE 7

Using a procedure analogous to that described in Example 1, 1-methyl-5-[4'-methyl-pyridyl-(2')]-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 225-227C., of the formula ##SPC14##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, and 2-chloro-4-methyl-pyridine.

EXAMPLE 8

Using a procedure analogous to that described in Example 2, 1-methyl-5-(2'-nitro-phenyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 206-208C., of the formula ##SPC15##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-chloro-nitrobenzene.

EXAMPLE 9

Using a procedure analogous to that described in Example 1, 1-methyl-5-(2'-cyano-pheno)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 209-210C., of the formula ##SPC16## was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-chloro-cyanobenzene.

EXAMPLE 10

Using a procedure analogous to that described in Example 1, 1-methyl-5-(2'-methoxycarbonyl-phenyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 183-184C., of the formula ##SPC17##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and methyl-o-chloro-benzoate.

EXAMPLE 11

Using a procedure analogous to that described in Example 1, 1-methyl-5-(2'-acetyl-phenyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 205-206C., of the formula ##SPC18##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-chloro-acetophenone.

EXAMPLE 12

Using a procedure analogous to that described in Example 1, 1-n-propyl-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 177-178C., of the formula ##SPC19##

was prepared from 1-n-propyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

.[.EXAMPLE 13.].

.[.Using a procedure analogous to that described in Example 1, 1-methyl-5-phenyl-7-methoxycarbonyl-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 145-147C., of the formula ##SPC20##

was prepared from 1-methyl-7-methoxycarbonyl-1,5-benzodiazepine-2,4-(3H,5H)-dione and chlorobenzene..].

EXAMPLE .[.14.]. .Iadd.13 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-methyl-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 244-246C., was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.15.]. .Iadd.14 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-methyl-5-(2'-pyridyl)-7-trifluoromethyl-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 164-168C., was prepared from 1-methyl-7-trifluoromethyl-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.16.]. .Iadd.15 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-ethyl-5-(2'-pyridyl)-8-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 194-196C., of the formula ##SPC21##

was prepared from 1-ethyl-8-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.17.]. .Iadd.16 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-ethyl-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 194-196C., was prepared from 1-ethyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.18.]. .Iadd.17 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-ethyl-5-(3'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 196-198C., was prepared from 1-ethyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and m-bromo-pyridine.

EXAMPLE .[.19.]. .Iadd.18 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-n-butyl-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 148-149C., was prepared from 1-n-butyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.20.]. .Iadd.19 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-phenyl-5-(2'-pyridyl)-8-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 203-204C., of the formula ##SPC22##

was prepared from 1-phenyl-8-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.21.]. .Iadd.20 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-methyl-5-(2'-pyridyl)-7-bromo-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 197-198C., of the formula ##SPC23##

was prepared from 1-methyl-7-bromo-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.22.]. .Iadd.21 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-methyl-5-(2'-pyrimidyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 243-245C., of the formula ##SPC24##

was prepared from 1-methyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyrimidine.

EXAMPLE .[.23.]. .Iadd.22 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-cyclohexyl-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 190C., of the formula ##SPC25##

was prepared from 1-cyclohexyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.24.]. .Iadd.23 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-isopropyl-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 165-167C., was prepared from 1-isopropyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.25.]. .Iadd.24 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-methyl-5-phenyl-7-acetyl-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 134-137C., of the formula ##SPC26##

was prepared from 1-methyl-7-acetyl-1,5-benzodiazepine-2,4-(3H,5H)-dione and chlorobenzene.

EXAMPLE .[.26.]. .Iadd.25 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-(β-hydroxy-ethyl)-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 176-178C., of the formula ##SPC27##

was prepared from 1-(β-hydroxy-ethyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.27.]. .Iadd.26 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-ethyl-5-(2'-pyridyl)-7-trifluoromethyl-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 153-155C., was prepared from 1-ethyl-7-trifluoromethyl-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.28.]. .Iadd.27 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-benzyl-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 216-128C., of the formula ##SPC28##

was prepared from 1-benzyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.29.]. .Iadd.28 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-(β-hydroxy-ethyl)-5-(2'-pyridyl)-7-trifluoromethyl-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 149-151C., was prepared from 1-(β-hydroxy-ethyl)-7-trifluoromethyl-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.30.]. .Iadd.29 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-(β-acetoxy-ethyl)-5-(2'-pyridyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 196-198C., of the formula ##SPC29##

was prepared from 1-(β-acetoxy-ethyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-bromo-pyridine.

EXAMPLE .[.31.]. .Iadd.30 .Iaddend.

Using a procedure analogous to that described in Example 2, 1-(γ-hydroxy-propyl)-5-(o-nitro-phenyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 162-163C., of the formula ##SPC30##

was prepared from 1-(γ-hydroxy-propyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-chloro-nitrobenzene.

EXAMPLE .[.32.]. .Iadd.31 .Iaddend.

Using a procedure analogous to that described in Example 2, 1-cyclohexyl-5-(o-nitro-phenyl)-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 182-183C., was prepared from 1-cyclohexyl-7-chloro-1,5-benzodiazepine-2,4-(3H,5H)-dione and o-chloro-nitrobenzene.

EXAMPLE .[.33.]. .Iadd.32 .Iaddend.

Using a procedure analogous to that described in Example 1, 1-methyl-5-phenyl-7-cyano-1,5-benzodiazepine-2,4-(3H,5H)-dione, m.p. 260-262C., of the formula ##SPC31##

was prepared from 1-methyl-7-cyano-1,5-benzodiazepine-2,4-(3H,5H)-dione and chlorobenzene.

The compounds according to the present invention, i.e., those embraced by formulas I, II and III above, have useful pharmacodynamic properties. More particularly, the compounds of the instant invention exhibit very effective psychosedative and anticonvulsive activities in warm-blooded animals, such as mice, rats, golden hamsters, cats and dogs, with extremely low toxicity.

Particularly effective are those compounds of the formulas I, II and III wherein

R1 is straight or branched alkyl of 1 to 3 carbon atoms or hydroxyalkyl of 2 to 3 carbon atoms,

R2 is hydrogen,

R3 is pyridyl,

R4 is halogen, trifluoromethyl or cyano in 7-position,

R5 is trifluoromethyl, nitro, cyano or halogen in 2-position,

R6 is hydrogen,

R7 is cyano in 7-position,

R8 is cyano or nitro,

R9 is hydrogen, and

R10 is halogen or trifluoromethyl in 7-position.

The psychosedative and anticonvulsive activities of the compounds according to the present invention were ascertained by standard pharmacological test methods on laboratory animals, namely, Swinyard et al., J. Pharmacol. Exptl. Therm. Volume 106, page 319 (1952); Janssen et al., Psychopharmacologia Volume 1, page 389 (1960); and Broadhurst et al., J. Genet. Psychol. Volume 95, page 217 (1959).

For pharmaceutical purposes the compounds according to the present invention are administered to warm-blooded animals perorally or parenterally as active ingredients in customary dosage unit compositions, that is, compositions in dosage unit form consisting essentially of an inert pharmaceutical carrier and one effective dosage unit of the active ingredient, such as tablets, coated pills, capsules, wafers, powders, solutions, suspensions, emulsions, syrups, suppositories and the like. One effective dosage unit of the compounds according to the present invention is from 0.0083 to 0.84 mgm/kg body weight, preferably 0.0166 to 0.42 mgm/kg body weight. The daily dose rate is from 0.083 to 2.5 mgm/kg.

Such dosage unit compositions may, in addition to one or more of the compounds according to the invention, also contain one effective dosage unit of one or more other pharmacologically active ingredients, such as spasmolytics or psychopharmaceuticals.

The following examples illustrate a few dosage unit compositions comprising a compound of the instant invention as an active ingredient and represent the best mode contemplated of putting the invention to practical use. The parts are parts by weight unless otherwise specified.

EXAMPLE .[.34.]. .Iadd.33 .Iaddend.

Coated Pills

The pill core composition was compounded from the following ingredients:

______________________________________7-Chloro-1-isopropyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione                    5.0     partsLactose                  28.5    partsCorn starch              15.0    partsGelatin                  1.0     partsMagnesium stearate       0.5     partsTotal                    50.0    parts______________________________________

Compounding procedure:

The benzodiazepinedione compound was intimately admixed with the lactose and the corn starch, the mixture was granulated by moistening it with an aqueous 10% solution of the gelatin and forcing the moist mass through a 1 mm-mesh screen, and the granulate was dried at 40C. and again passed through the screen. The resulting dry granulate was admixed with the magnesium stearate, and the mixture was compressed into 50-mgm pill cores, which were then coated with a thin shell consisting essentially of an aqueous suspension of sugar, titanium dioxide, talcum and gum arabic. The coated pills were finally polished with beeswax. Each coated pill contained 5.0 mgm of the benzodiazepinedione compound and, when administered perorally to a warm-blooded animal of about 60 kg body weight in need of such treatment, produced very good psychosedative and anticonvulsive effects.

Analogous results were obtained when an equal amount of the following compounds was substituted for benzodiazepinedione compound in the above pill core composition:

(a) 7-Chloro-1-methyl-5-(2'-nitro-phenyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione;

(b) 7-Chloro-1-methyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione;

(c) 7-Chloro-1-methyl-5-(2'-cyano-phenyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione;

(d) 7-Bromo-1-methyl-5-(2'-pyridyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione; and

(e) 1-Methyl-5-(2'-pyridyl)-7-trifluoromethyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione.

EXAMPLE .[.35.]. .Iadd.34 .Iaddend.

Suppositories:

The suppository composition was compounded from the following ingredients:

______________________________________7-Cyano-1-methyl-5-phenyl-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione                   5.0      partsCocoa butter            1695.0   partsTotal                   1700.0   parts______________________________________

Compounding procedure:

The finely powdered benzodiazepinedione compound was stirred with the aid of an immersion homogenizer with the cocoa butter which had previously been melted and cooled to 40C. 1700 mgm-portions of the homogeneous mixture were then poured at 35C. into cooled suppository molds. Each suppository contained 5.0 mgm of the benzodiazepinedione compound and, when administered by the rectal route to a warm-blooded animal of about 60 kg body weight in need of such treatment, produced very good psychosedative and anticonvulsive effects.

Analogous results were obtained when an equal amount of 7-chloro-1-methyl-5-(2'-cyano-phenyl)-1H-1,5-benzodiazepine-2,4-(3H,5H)-dione was substituted for the benzodiazepinedione compound in the above suppository composition.

Analogous results were also obtained when an equal amount of any one of the other compounds embraced by formulas I, II and III above was substituted for the particular benzodiazepinedione compounds in Examples 33 and 34. Likewise, the amount of active ingredient in these examples may be varied to achieve the dosage unit range set forth above, and the amounts and nature of the inert pharmaceutical carrier ingredients may be varied to meet particular requirements.

While the present invention has been illustrated with the aid of certain specific embodiments thereof, it will be readily apparent to others skilled in the art that the invention is not limited to these particular embodiments, and that various changes and modifications may be made without departing from the spirit of the invention.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3391138 *Jul 22, 1965Jul 2, 1968Hoffmann La RocheCertain 1-substituted-benzodiazepin-2-one compounds
US3429874 *Jul 3, 1967Feb 25, 1969Schering Corp1-polyhalogenoalkyl-2-oxo-1,3-dihydro-2h-1,4-benzodiazepines
Non-Patent Citations
Reference
1 *Buchi et al., "Helv. Chim. Acta," vol. 39, pp. 957-965, (1965).
2 *Rossi et al., "La Chimica e l'Industria," vol. 51, No. 5, (May 1969), pp. 479-485.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7533361Jan 13, 2006May 12, 2009Cabot CorporationSystem and process for manufacturing custom electronics by combining traditional electronics with printable electronics
US7575621Jan 13, 2006Aug 18, 2009Cabot Corporationcombining a metal compound (AgNO3) with a solution that comprises a polyol (ethylene glycol)and a substance( polyvinypyrrolidone homo or copolymer) that is capable of being adsorbed on the nanoparticles. The nanoparticles are precipitated by adding a nanoparticle-precipitating liquid (acetone)
US7621976Dec 21, 2006Nov 24, 2009Cabot CorporationCoated silver-containing particles, method and apparatus of manufacture, and silver-containing devices made therefrom
US7749299Jan 13, 2006Jul 6, 2010Cabot Corporationrapid mixing a solution of a metal compound ( e.g AgNO3 ) that is capable of being reduced to a Ag by a polyol( ethyelne glycol decomposed to acetaldehyde which acts as reducing agent), with a heated solution containing above polyol and a polypyrrolidone capable of being adsorbed on the nanoparticles
US8167393Jan 13, 2006May 1, 2012Cabot CorporationPrintable electronic features on non-uniform substrate and processes for making same
US8334464Jan 13, 2006Dec 18, 2012Cabot CorporationOptimized multi-layer printing of electronics and displays
US8383014Jun 15, 2010Feb 26, 2013Cabot CorporationMetal nanoparticle compositions
US8597397Jul 2, 2010Dec 3, 2013Cabot CorporationProduction of metal nanoparticles
US8668848Dec 4, 2012Mar 11, 2014Cabot CorporationMetal nanoparticle compositions for reflective features
Classifications
U.S. Classification540/518
International ClassificationC07D243/12
Cooperative ClassificationC07D243/12
European ClassificationC07D243/12