There is disclosed compounds and pharmaceutical compositions that are a resolved R or S (preferably R) enantiomer of an .omega.-1 alcohol of a straight chain alkyl (C.sub.5-8) substituted at the 1-position of 3,7-disubstituted xanthine. The inventive compounds are effective in modulating cellular response...http://www.google.com/patents/US5648357?utm_source=gb-gplus-sharePatent US5648357 - Enatiomerically pure hydroxylated xanthine compounds
