在
potassium carbonate 作用下,
以
乙醇 为溶剂,
以89%的产率得到(2R,4aR,6S,7R,8S,8aR)-2-[2-[(1S,3R,8S,10R,12S,13R)-6,6-ditert-butyl-13-[(4-methoxyphenyl)methoxy]-1,12-dimethyl-2,5,7,11-tetraoxa-6-silatricyclo[8.4.0.03,8]tetradecan-12-yl]ethyl]-6,8a-dimethyl-7,8-bis(phenylmethoxy)-6-(2-phenylmethoxyethyl)-4,4a,7,8-tetrahydropyrano[3,2-b]pyran-3-one