(3aS,3bS,5S,6aR,7S,7aR)-3,3,7a-trimethyl-4-methylidene-2,3a,5,6,6a,7-hexahydro-1H-cyclopenta[b]pentalene-3b,5,7-triol 在
吡啶 作用下,
生成
[(3aS,3bS,5S,6aR,7S,7aR)-7-acetyloxy-3b-hydroxy-3,3,7a-trimethyl-4-methylidene-2,3a,5,6,6a,7-hexahydro-1H-cyclopenta[a]pentalen-5-yl] acetate