(4aR,5S,6S,8aR)-(+)-3,4,4a,5,6,7,8,8a-octahydro-6-hydroxy-5-(hydroxymethyl)-8a-methyl-1-(2H)-naphthalenone 1-ethylene acetal 在
对甲苯磺酸 作用下,
以
水 为溶剂,
反应 3.0h,
以98%的产率得到(4aR,5S,6S,8aR)-(+)-3,4,4a,5,6,7,8,8a-octahydro-6-hydroxy-5-(hydroxymethyl)-8a-methyl-1-(2H)-naphthalenone