Acetic acid (3S,5R,7R,8R,9S,10R,13R,14R,17R)-17-((R)-1,5-dimethyl-hexyl)-7-hydroxy-14-(hydroxyimino-methyl)-4,4,10,13-tetramethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester 在
吡啶 、
2,3,5-三甲基吡啶 、 selenium(IV) oxide 作用下,
以
溶剂黄146 为溶剂,
生成
[(3S,5R,10S,13R,14S,17R)-14-cyano-4,4,10,13-tetramethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,5,6,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-3-yl] acetate