Acetic acid (8R,9S,10R,13S,14S,16R,17S)-16-isopropyl-10,13-dimethyl-3-oxo-2,3,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl ester 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
1,4-二氧六环 为溶剂,
生成 Acetic acid (1S,2R,8R,9S,10S,13S,14S,16R,17S)-16-isopropyl-10,13-dimethyl-3-oxo-1,2,3,8,9,10,11,12,13,14,15,16,17,20-tetradecahydro-cyclopropa[1,2]cyclopenta[a]phenanthren-17-yl ester