申请人:Eisai R&D Management Co., Ltd.
公开号:EP1935893A1
公开(公告)日:2008-06-25
Disclosed is a process for production of a compound represented by the formula (11):
[wherein P1 represents a hydrogen atom or a protective group for a hydroxyl group; P7 represents a hydrogen atom or a protective group for a hydroxyl group; P8 represents a hydrogen atom, an acetyl group or a protective group for a hydroxyl group and P9 represents a hydrogen atom or a protective group for a hydroxyl group, or P8 and P9 may together form a group represented by the formula:
(where R5 represetns a phenyl group which may have a halogen atom; and R1 represetns a hydrogen atom or a hydroxyl group)]. The process comprises the step of reacting a compound represented by the formula (12):
(wherein P7 and R1 are as defined above) with a compound represented by the formula (13):
(wherein P1, P8, P9 and R5 are as defined above) in the presence of a catalyst.
本发明公开了一种由式(11)代表的化合物的生产工艺:
[其中 P1 代表氢原子或羟基的保护基团;P7 代表氢原子或羟基的保护基团;P8 代表氢原子、乙酰基或羟基的保护基团,P9 代表氢原子或羟基的保护基团,或 P8 和 P9 可共同形成由式(11)表示的基团:
(其中 R5 代表苯基,该苯基可带有卤素原子;R1 代表氢原子或羟基)]。该工艺包括使式(12)所代表的化合物发生反应的步骤:
(其中 P7 和 R1 如上定义)与式(13)所代表的化合物反应:
(其中 P1、P8、P9 和 R5 如上定义)的化合物在催化剂存在下进行反应。