(24R,28S)-6β-methoxy-3,5-cyclostigmastan-28-ol 、
甲基磺酰氯 以
吡啶 为溶剂,
反应 3.0h,
以55 mg的产率得到Methanesulfonic acid (1S,2R,5R)-2-isopropyl-5-((1aR,3aR,3bS,5aR,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl)-1-methyl-hexyl ester