N-(2-propenyl)-N-[[[[N'-(2-propenyl)-N'-(1S)-1-methoxycarbonyl-2-methyl-propyl]carbonyl]-N''-(benzyl)-amino]sulfonyl]-(S)-valine methyl ester 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
以71%的产率得到(2S)-2-[2-benzyl-4-[(1S)-1-methoxycarbonyl-2-methyl-propyl]-1,1,3-trioxo-1,2,3,4,5,8-hexahydro-1λ
6-[1,2,4,9]thiatriazonin-9-yl]-3-methyl-butyric acid methyl ester