(2R,3R,3aS,6aR)-2-((2S,3R,3aS,6aR)-2-Benzyloxy-5,5-dimethyl-hexahydro-1,4,6-trioxa-cyclopropa[e]inden-3-yloxy)-5,5-dimethyl-hexahydro-1,4,6-trioxa-cyclopropa[e]inden-3-ol 在
Amberlyst A-27 resin 、
水 作用下,
以61%的产率得到(3aR,4S,5S,6S,7R,7aS)-6-((3aS,4R,5S,6S,7S,7aR)-5-Benzyloxy-6,7-dihydroxy-2,2-dimethyl-hexahydro-benzo[1,3]dioxol-4-yloxy)-2,2-dimethyl-hexahydro-benzo[1,3]dioxole-4,5,7-triol