benzyl 2(S)-[methyl-(5-benzyloxycarbonylamino)-2(S)-amino-4(R)-hydroxypentanoyl]amino-3-[4,4'-bisbenzyloxy-3'-(2(S)-benzyloxycarbonylamino-2-pentafluorophenyloxycarbonylethyl)biphenyl-3-yl]propionate hydrochloride 在
三乙胺 作用下,
以
二氯甲烷 、
氯仿 为溶剂,
以69%的产率得到benzyl (8S,11S,14S)-5,17-bis(benzyloxy)-14-{[(benzyloxy)carbonyl]amino}-11-(2R)-3-{[(benzyloxy)carbonyl]amino}-2-hydroxypropyl-9-methyl-10,13-dioxo-9,12-diazatricyclo[14.3.1.1
2,6]henicosa-1(20),2(21),3,5,16,18-hexaene-8-carboxylate