2-[4-(叔丁基)苯氧基]-2-甲基丙酸 、 (4R,6R)-6-{(1S,2S,6S,8S,8aR)-2-[1,2,6,7,8,8a-hexahydro-6-t-butyldimethylsilyloxy-8-hydroxy-2-methyl-1-naphthyl]ethyl}tetrahydro-4-t-butyldimethyl silyloxy-2H-pyran-2-one 以to give 1.12 g of the title compound as a colorless foam的产率得到(4R,6R)-6-([1S,2S,6S,8S,8aR]-2-{1,2,6,7,8,8a-Hexahydro-6-t-butyldimethylsilyloxy-8-[2-(4-t-butylphenoxy)-2-methylpropionyloxy]-2-methyl-1-naphthyl}ethyl)tetrahydro-4-t-butyldimethylsilyloxy-2H-pyran-2-one