在
吡啶 、
氯化亚砜 作用下,
反应 2.0h,
以10 mg的产率得到Acetic acid 1-[(3S,5R,8R,9S,10S,13S,14S)-3-((2R,3R,4S,5S,6R)-3,5-diacetoxy-4-methoxy-6-methyl-tetrahydro-pyran-2-yloxy)-10,13-dimethyl-2,3,4,5,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-ethyl ester