(2aR,4S,4aS,8aS,8bS)-4-[tert-butyl(dimethyl)silyl]oxy-4a-methylspiro[1,2a,3,4,5,6,8,8a-octahydronaphtho[2,1-b]oxete-7,2'-1,3-dioxolane]-8b-ol 在
collidinium p-toluene sulfonate 作用下,
以
水 、
丙酮 为溶剂,
反应 120.0h,
以84%的产率得到(2aR,4S,4aS,8aS,8bS)-4-[tert-butyl(dimethyl)silyl]oxy-8b-hydroxy-4a-methyl-1,2a,3,4,5,6,8,8a-octahydronaphtho[2,1-b]oxet-7-one