申请人:ELI LILLY AND COMPANY
公开号:EP0878474A2
公开(公告)日:1998-11-18
The present invention provides a process for preparing a class of compounds having the structure
wherein:
n is 0, 1, or 2;
R is hydrogen or C1-C4 alkyl;
X1 is hydrogen, cyano, 4-hydroxybenzoyl, 4-halobenzoyl, or 4-(C1-C4 alkoxy)benzoyl;
Y is NR4R5, 4-hydroxyphenyl, or 4-(C1-C4 alkoxy)phenyl;
R4 and R5 are independently hydrogen or C1-C4 alkyl.
The compounds are useful intermediates in the preparation of a class of compounds including the selective estrogen receptor modulating compound 6-hydroxy-2-(4-hydroxyphenyl)-3-[4-(2-piperidinoethoxy)benzoyl]benzo[b]-thiophene (raloxifene).
本发明提供了一种制备具有以下结构的一类化合物的工艺
其中
n为0、1或2
R 是氢或 C1-C4 烷基;
X1 是氢、氰基、4-羟基苯甲酰基、4-卤代苯甲酰基或 4-(C1-C4烷氧基)苯甲酰基;
Y 是 NR4R5、4-羟基苯基或 4-(C1-C4 烷氧基)苯基;
R4 和 R5 独立地为氢或 C1-C4 烷基。
这些化合物是制备包括选择性雌激素受体调节化合物 6-羟基-2-(4-羟基苯基)-3-[4-(2-哌啶乙氧基)苯甲酰基]苯并[b]-噻吩(雷洛昔芬)在内的一类化合物的有用中间体。