tert-butyl {4-[(3-{[({(3R,5R,8R,9S,10S,12S,13R,14S,17R)-17-[(22R)-9,14-Bis(tert-butoxycarbonyl)-2,2-dimethyl-4,19-dioxo-3-oxa-5,9,14,18-tetraazatricosan-22-yl]-12-hydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-3-yl}oxy)carbonyl]amino}propyl)(tert-butoxycarbonyl)amino]butyl}[3-({(4R)-4-[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-3,12-dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoyl}amino)propyl]carbamate 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以49%的产率得到(5b,12a)-24-{[3-({4-[(3-aminopropyl)amino]butyl}amino)propyl]amino}-12-hydroxy-24-oxocholan-3-yl [3-({4-[(3-{[(3a,5b,12a)-3,12-dihydroxy-24-oxocholan-24-yl]amino}propyl)amino]butyl}amino)propyl]carbamate