4-(3-氯苄基)噻吩-3-羧酸 、
(S)-4-(1-氨基乙基)-苯甲酸甲酯盐酸盐 在
silica gel 作用下,
以After chromatography on silica gel (EtOAc/hexane 40:60 to 95:5), the desired product was obtained as a white solid的产率得到methyl 4-[(1S)-1-({[4-(3-chlorobenzyl)-3-thienyl]carbonyl}amino)ethyl]benzoate