Patent ID: 6307060
Filing Date: 2001-10-23
Classification: A61P,C07D

Abstract:
An enantiomerically pure ester with enantiomeric purity of 90% minimum enantiomeric excess (ee) selected from the group consisting of the (3R,2'R)-, and (3S,2'R)-configured enantiomers of the formula I ##STR11##in whichR.sub.1 is a cyclopentyl, a cyclohexyl or a norbornyl radical;R.sub.2 is a methyl radical;R.sub.3 is a methyl radical;AR is a phenyl radical or thienyl radical;n is 1, or 2A is an anion of a pharmacologically acceptable acid and in which OH, AR, and R.sub.1 are arranged clockwise when viewed looking toward the carboxyl group.