tert-butyl 2-[[4-[[(19S)-10,19-diethyl-19-[4-[[1-[(2-methylpropan-2-yl)oxy]-1-oxooctan-2-yl]amino]-4-oxobutanoyl]oxy-14,18-dioxo-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4(9),5,7,10,15(20)-heptaen-7-yl]oxy]-4-oxobutanoyl]amino]octanoate 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以180 mg的产率得到2-[[4-[[(19S)-19-[4-(1-carboxyheptylamino)-4-oxobutanoyl]oxy-10,19-diethyl-14,18-dioxo-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4(9),5,7,10,15(20)-heptaen-7-yl]oxy]-4-oxobutanoyl]amino]octanoic acid