聚合甲醛 、
(3a,5b,7a,12a)-3-氨基-7,12-二羟基胆甾烷-24-酸甲酯 、
溶剂黄146 、
tris(2-isocyanoethyl)amine 以
甲醇 为溶剂,
反应 12.0h,
以32%的产率得到methyl (4R)-4-[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3-[acetyl-[2-[2-[bis[2-[[2-[acetyl-[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-7,12-dihydroxy-17-[(2R)-5-methoxy-5-oxopentan-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]amino]acetyl]amino]ethyl]amino]ethylamino]-2-oxoethyl]amino]-7,12-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoate