(S)-2-{(S)-2-[(S)-3-(4-but-3-enyloxy-phenyl)-2-tert-butoxycarbonylamino-propionylamino]-4-methyl-pentanoylamino}-pent-4-enoic acid methyl ester 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 、
氯代二环己基硼烷 作用下,
以
正己烷 、
1,1,2-三氯乙烷 为溶剂,
反应 1.0h,
生成 Z-(8S,11S,14S)-14-tert-butoxycarbonylamino-11-isobutyl-10,13-dioxo-2-oxa-9,12-diaza-bicyclo[14.2.2]icosa-1
(19),5,16
(20),17-tetraene-8-carboxylic acid methyl ester 、
(E,8S,11S,14S)-14-tert-butoxycarbonylamino-11-isobutyl-10,13-dioxo-2-oxa-9,12-diazabicyclo[14.2.2]icosa-1(19),5,16(20),17-tetraene-8-carboxylic acid methyl ester