4-(N-(N-(4-nitrobenzyl)carbamoyl)-N-methylamino)-piperidine trifluoroacetate 、
α-(R)-(3-(R)-Formyl-4-(S)-phenyl-pyrrolidin-1-yl)cyclohexaneacetic acid, para-methoxybenzyl ester 在
2-(R)-(3-(S)-(4-(N-(N-(4-Nitrobenzyl)carbamoyl)-N-methylamino)-piperidin-1 yl)methyl-4-(S)-phenyl-pyrrolidin-1-yl)-2-(cyclohexyl)acetic acid 作用下,
以to give 18 mg (61%) of the title compound的产率得到2-(R)-(3-(S)-(4-(N-(N-(4-Nitrobenzyl)carbamoyl)-N-methylamino)-piperidin-1 yl)methyl-4-(S)-phenyl-pyrrolidin-1-yl)-2-(cyclohexyl)acetic acid