Preparation of optically active (S)-(-) and (R)-(+)- deoxyspergualin and novel intermediates thereof
申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:EP0765866A2
公开(公告)日:1997-04-02
A process for preparing optically active (S)-(-) and (R)-(+)-deoxyspergualin and salts thereof of the formula I
by reacting a compound of formula II
with a compound of formula III
in the presence of a condensing/dehydrating agent and an organic or inorganic base in an organic solvent to form a compound of formula IV
which can then be converted to the desired final product of formula I via deprotection and hydrogenolysis. The invention also comprises the compounds of the formula II, IV and VII
一种制备光学活性(S)-(-)和(R)-(+)-脱氧表阿胶及其式 I 盐的工艺
使式 II 的化合物与式 III 的化合物反应
与式 III 的化合物反应
在冷凝剂/脱水剂和有机或无机碱存在下,在有机溶剂中反应生成式 IV 化合物
然后通过脱保护和氢解将其转化为所需的式 I 最终产物。本发明还包括式 II、IV 和 VII 的化合物