申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04108861A1
公开(公告)日:1978-08-22
A compound of the formula ##STR1## wherein R.sub.1 is lower alkyl, aryloxy(lower)alkyl or ar(lower)alkyl, R.sub.2 is lower alkyl, Coor.sub.3 is esterified carboxy selected from lower alkoxycarbonyl and ar(lower)alkoxycarbonyl, X is halogen selected from bromine and chlorine, and X' is hydrogen or halogen selected from bromine and chlorine, Said aryl and said ar each constituting phenyl, tolyl or xylyl, and a method of making it are disclosed.
公式为 ##STR1## 的化合物,其中 R.sub.1 是低烷基,芳氧(低)烷基或芳基(低)烷基,R.sub.2 是低烷基,Coor.sub.3 是选自低烷氧羰基和芳基(低)烷氧羰基的酯化羧基,X 是选自溴和氯的卤素,X' 是氢或选自溴和氯的卤素,所述芳基和所述芳基分别构成苯基、甲苯基或二甲苯基,还公开了一种制备它的方法。