(3aS,4R,6S,7R,7aR)-7-hydroxy-4-(phenylmethoxymethyl)-6-[[(2R,3S,4R)-4-phenylmethoxy-2-(phenylmethoxymethyl)-3,4-dihydro-2H-pyran-3-yl]oxy]-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-2-one 在
甲醇 、 silver tetrafluoroborate 、 4 A molecular sieve 、
sodium methylate 、
三丁基氧化锡 作用下,
反应 1.0h,
生成 [(3aS,4R,6S,7R,7aS)-6-[(2R,3R,4R,5R,6S)-5-(benzenesulfonamido)-6-[(2R,3S,4S,5R,6S)-3,5-dihydroxy-2-(phenylmethoxymethyl)-6-[[(2R,3S,4R)-4-phenylmethoxy-2-(phenylmethoxymethyl)-3,4-dihydro-2H-pyran-3-yl]oxy]oxan-4-yl]oxy-2-(phenylmethoxymethyl)-4-triethylsilyloxyoxan-3-yl]oxy-2-oxo-4-(phenylmethoxymethyl)-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-7-yl] acetate