tert-butyl 2-((4S,9S,14aS,E)-4-(((9H-fluoren-9-yl)methoxy)carbonylamino)-3,10-dioxo-3,4,5,8,9,10,12,13,14,14a-decahydro-1H-pyrrolo[2,1-c][1,4]oxaazacyclododecin-9-yl)acetate 、
三氟乙酸 、
2-((4S,9S,14aS,E)-4-(((9H-fluoren-9-yl)methoxy)carbonylamino)-3,10-dioxo-3,4,5,8,9,10,12,13,14,14a-decahydro-1H-pyrrolo[2,1-c][1,4]oxaazacyclododecin-9-yl)acetic acid 、
对氯苄胺 在
ice water 作用下,
以
二氯甲烷 、
methanol-dichloromethane 为溶剂,
反应 5.0h,
以The product (44 mg) was obtained in 50% yield over 2 steps after column chromatography (MeOH/DCM gradient)的产率得到