PROCESS FOR PRODUCING DIHYDROPYRIDINE CARBOXYLIC ACIDS

摘要

PCT No. PCT/EP91/02476 Sec. 371 Date Aug. 17, 1993 Sec. 102(e) Date Aug. 17, 1993 PCT Filed Dec. 20, 1991 PCT Pub. No. WO92/11239 PCT Pub. Date Jul. 9, 1992.The invention relates to a process for the preparation of optically pure 1,4-dihydropyridinemonocarboxylic acids of the formula I (I) in which the substituents have the meanings mentioned in the description.