叔丁氧羰基氨氧基乙酸 、
3β-cholest-5-en-3-yl N-(2-aminoethyl)carbamate 在
4-二甲氨基吡啶 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
反应 15.0h,
以81%的产率得到(3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl (2,2-dimethyl-4,8-dioxo-3,6-dioxa-5,9-diazaundecan-11-yl)carbamate