Preparation of optically active cyclohexenol and cyclohexenyl acetic acid via an enzymatic process followed by a rearrangement reaction and their use as intermediates in the synthesis of indolobenzoquinoline derivatives
申请人:Sankyo Company Limited
公开号:EP0674008A1
公开(公告)日:1995-09-27
A process for the production of optically active compounds of formula (VIII) and III
which process comprises the following steps:
(a) reaction, in the presence of a lipase, of a dl-trans-cyclohexanol compound of formula (XXI):
to give an optically active compound of formula (XXIV)
followed by b) an oxidation, c) an elimination and d) a hydrolyzation reaction to give the optically active compound VIII and rearranging the compound VIII with orthoester to the optically active compound III.
Compounds VIII and III are intermediates in the synthesis of optically active compounds of formula I
一种生产式(VIII)和式(III)光学活性化合物的工艺
该工艺包括以下步骤
(a) 式(XXI)的二反式环己醇化合物在脂肪酶存在下进行反应:
得到式(XXIV)的光学活性化合物
然后进行 b) 氧化反应、c) 消去反应和 d) 水解反应,得到光学活性化合物 VIII,并将化合物 VIII 与原酯重新排列,得到光学活性化合物 III。
化合物 VIII 和 III 是合成具有光学活性的式 I 化合物的中间体。