N,N'-bis( tert-butoxycarbonyl)-1H-pyrazole-1-carboxamidine 在
N,N'-bis( tert-butoxycarbonyl)-1H-pyrazole-1-carboxamidine 作用下,
以85的产率得到tert-butyl (3R)-3-[2-[5-[bis[(2-methylpropan-2-yl)oxycarbonylamino]methylideneamino]pentanoylamino]-6-[[6-[[3-[5-[bis[(2-methylpropan-2-yl)oxycarbonylamino]methylideneamino]pentanoylamino]-2-[(3R)-1-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolidin-3-yl]oxy-5-(trifluoromethyl)phenyl]carbamoyl]pyrimidine-4-carbonyl]amino]-4-(trifluoromethyl)phenoxy]pyrrolidine-1-carboxylate