(2R,3S,4R,5R)-5-[tert-butyl(dimethyl)silyl]oxy-2,4-dimethyl-3-phenylmethoxyheptanal 、 (R)-4-Benzyloxy-4-[(2R,3R,4S,5R,6S)-4-(tert-butyl-dimethyl-silanyloxy)-6-methoxy-3,5-dimethyl-tetrahydro-pyran-2-yl]-pentanoic acid methoxymethyl ester 在
lithium diisopropyl amide 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
以48.9%的产率得到methoxymethyl (2S,3S,4S,5R,6R,7R)-7-[tert-butyl(dimethyl)silyl]oxy-2-[(2R)-2-[(2R,3R,4S,5R,6S)-4-[tert-butyl(dimethyl)silyl]oxy-6-methoxy-3,5-dimethyloxan-2-yl]-2-phenylmethoxypropyl]-3-hydroxy-4,6-dimethyl-5-phenylmethoxynonanoate