[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-12-acetyloxy-17-[(2R)-5-aminopentan-2-yl]-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl] acetate 、 在
三乙酰氧基硼氢化钠 、
溶剂黄146 作用下,
以
1,2-二氯乙烷 为溶剂,
以78%的产率得到[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-12-acetyloxy-10,13-dimethyl-17-[(2R)-5-[[11,17,23-tris[[[(4R)-4-[(3R,5R,8R,9S,10S,12S,13R,14S,17R)-3,12-diacetyloxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentyl]amino]methyl]-25,26,27,28-tetrakis(2-methoxyethoxy)-5-pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(24),3,5,7(28),9,11,13(27),15(26),16,18,21(25),22-dodecaenyl]methylamino]pentan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl] acetate