申请人:Sankyo Company, Limited
公开号:US05681951A1
公开(公告)日:1997-10-28
A process for preparing a compound of formula (I'): ##STR1## comprising reacting a compound of formula (II'): ##STR2## with a compound of formula (III'): A'SH (III') wherein the reaction of the compound of formula (II') and the compound of formula (III') are carried out in the presence of a salt of a metal of Group II or III of the Periodic Table of Elements, wherein A' is an alkyl, aryl, aralkyl or heterocyclic, R.sup.1' is hydrogen or a carboxy protecting group, R.sup.2' and R.sup.3' can be hydrogen or alkyl, X' can be sulfur, k' is 1 or 2 and R.sup.4' is alkyl, alkenyl, aryl, aralkyl, cycloalkyl or heterocyclic.
一种制备式(I')化合物的方法: ##STR1## 包括将式(II')化合物与式(III')化合物反应: ##STR2## 其中化合物(II')和化合物(III')的反应在元素周期表II或III族金属的盐的存在下进行,其中A'是烷基,芳基,芳烷基或杂环基,R.sup.1'是氢或羧基保护基,R.sup.2'和R.sup.3'可以是氢或烷基,X'可以是硫,k'为1或2,R.sup.4'是烷基,烯基,芳基,芳烷基,环烷基或杂环基。