戊二酸酐 、
1,1-dimethylethyl (2S)-4-{[3'-(aminomethyl)-3-biphenylyl]methyl}-2-methyl-1-piperazinecarboxylate 在
methanol-dichloromethane 作用下,
以
四氢呋喃 为溶剂,
反应 0.17h,
以then afforded the desired product (70 mg)的产率得到5-[({3'-[((3S)-4-{[(1,1-dimethylethyl)oxy]carbonyl}-3-methyl-1-piperazinyl)methyl]-3-biphenylyl}methyl)amino]-5-oxopentanoic acid