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US5849924A Highly selective process for the preparation of enantiomerically pure phenyl-substituted 1,4-dihydropyridine-3,5-dicarboxylic acid derivatives 失效
用于制备对映体纯的苯基取代的1,4-二氢吡啶-3,5-二羧酸衍生物的高选择性方法

Highly selective process for the preparation of enantiomerically pure
phenyl-substituted 1,4-dihydropyridine-3,5-dicarboxylic acid derivatives
摘要:
The present invention relates to a new highly selective process for the preparation of enantiomerically pure halogeno-phenyl-substituted 1,4-dihydropyridine-3,5-dicarboxylic esters of the general formula (I) ##STR1## in which R.sup.1 to R.sup.3 have the meanings given in the description.
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