tert-butyl N-[4-[[(3S,5R,6R,8S,9S,10R,13R,14S,17R)-3,5-dihydroxy-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-1,2,3,4,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-6-yl]amino]butyl]-N-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propyl]carbamate 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以64%的产率得到5α-hydroxy-6β-[4-(3-aminopropylamino)-butylamino]-cholestan-3β-ol