1-{[4-(4-bromobenzenesulfonyloxy)pyrrolidine-2-carbonyl]amino}-2-vinyl-cyclopropane-carboxylic acid ethyl ester hydrogen chloride 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 、 O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 作用下,
以
N,N-二甲基乙酰胺 、
甲苯 为溶剂,
生成 18-(4-bromobenzenesulfonyloxy)-14-cyclopentyloxycarbonylamino-2,15-dioxo-12-thia-3,16-diazatricyclo[14.3.0.0(4,6)]nonadec-7-ene-4-carboxylic acid ethyl ester