(2S,4R)-2-bromoacetyl-4-methanesulfonyloxy-1-(4-nitrobenzyloxycarbonyl)pyrrolidine 、
3-(4-nitrobenzyloxycarbonylamino)propionthioamide 生成 (2S,4R)-4-Methanesulfonyloxy-1-(4-nitrobenzyloxycarbonyl)-2-[2-{2-(4-nitrobenzyloxycarbonylamino)ethyl}thiazol-4-yl]pyrrolidine