2-(4-tert-butyl-phenoxy)-butyric acid 、
(4R,6R)-6-{2-[(1S,2S,6S,8S,8aR)-1,2,6,7,8,8a-hexahydro-6-tert-butyldimethylsilyloxy-8-hydroxy-2-methyl-1-naphthyl]ethyl}tetrahydro-4-tert-butyldimethylsilyloxy-2H-pyran-2-one 以to give 1.41g 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-[(2RS)-2-(4-t-butylphenoxy)butyryloxy]-2-methyl-1-naphthyl}ethyl)tetrahydro-4-t-butyldimethylsilyloxy-2H-pyran-2-one