methyl (3S,4S,5R,8R,9R,10R,13S,14R,15R)-4-(2-cyanoethyl)-4,9,10-trimethyl-3,15-bis(prop-1-en-2-yl)-2,3,5,6,7,8,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-13-carboxylate 在
盐酸羟胺 、
碳酸氢钠 作用下,
以
乙醇 、
水 为溶剂,
以80%的产率得到methyl (3S,4S,5R,8R,9R,10R,13S,14R,15R)-4-[(3Z)-3-amino-3-hydroxyiminopropyl]-4,9,10-trimethyl-3,15-bis(prop-1-en-2-yl)-2,3,5,6,7,8,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-13-carboxylate