乙酸酐 、
[(2S,3R,6S)-2-ethoxy-6-(hydroxymethyl)-3,6-dihydro-2H-pyran-3-yl]-[(2S,3R,4S,5R,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]methanol 以
吡啶 为溶剂,
生成 [(2S,3R,6S)-3-[(R)-acetyloxy-[(2S,3R,4S,5R,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]methyl]-2-ethoxy-3,6-dihydro-2H-pyran-6-yl]methyl acetate 、 [(2S,3R,6S)-3-[(S)-acetyloxy-[(2S,3R,4S,5R,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]methyl]-2-ethoxy-3,6-dihydro-2H-pyran-6-yl]methyl acetate