(1aR,3R,4aR,4bS,6aS,7S,9aS,9bR,10aS)-3-Bromo-7-hydroxy-4a,6a,7-trimethyl-tetradecahydro-cyclopenta[a]cyclopropa[j]fluoren-2-one 在
2,3,5-三甲基吡啶 作用下,
生成 (1aR,4aR,4bS,6aS,7S,9aS,9bR,10aS)-7-Hydroxy-4a,6a,7-trimethyl-1,1a,4b,5,6,6a,7,8,9,9a,9b,10-dodecahydro-4aH-cyclopenta[a]cyclopropa[j]fluoren-2-one