methyl octadecahydro-3b-hydroxy-3a,6d,7-trimethyl-1,6-methanocyclopenta<3,4>pentaleno<2,1,6-cde>pentaleno<2,1,6-gha>pentalene-7-carboxylate 在
对甲苯磺酸 作用下,
以
苯 为溶剂,
反应 6.0h,
以92%的产率得到methyl 1,1a,1b,2,3,3a,4,5,5a,6,6a,6b,6c,6d,6e,6f-hexadecahydro-3a,6d,7-trimethyl-1,6-methanocyclopenta<3,4>pentaleno<2,1,6-cde>pentaleno<2,1,6-gha>pentalene-7-carboxylate