methyl 4-[2-(4-{[(2-{[3-(chlorosulfonyl)benzoyl]amino}-4,5,6,7-tetrahydro-1-benzothiophen-3-yl)carbonyl]amino}phenyl)ethyl]benzoate 、
ethyl 2-(hexahydropyrrolo[3,4-c]pyrrole-2(1H)-yl)ethanoate 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
以21%的产率得到4-(4-(2-(3-((5-(2-ethoxy-2-oxoethyl)hexahydropyrrolo[3,4-c]pyrrole-2(1H)-yl)sulfonyl)benzoylamino)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbonylamino)phenethyl)benzoic acid methyl ester