Acetic acid 2-(3-acetoxy-4-methoxy-phenyl)-4-oxo-7-[(3R,4S,5R,6R)-3,4,5-triacetoxy-6-((2S,3R,4R,5S,6S)-3,4,5-triacetoxy-6-methyl-tetrahydro-pyran-2-yloxymethyl)-tetrahydro-pyran-2-yloxy]-chroman-5-yl ester 在
sodium cyanoborohydride 作用下,
以
三氟乙酸 为溶剂,
以59%的产率得到Acetic acid (3R,4S,5R,6R)-4,5-diacetoxy-2-{3-acetoxy-4-[3-(3-acetoxy-4-methoxy-phenyl)-propyl]-5-hydroxy-phenoxy}-6-((2S,3R,4R,5S,6S)-3,4,5-triacetoxy-6-methyl-tetrahydro-pyran-2-yloxymethyl)-tetrahydro-pyran-3-yl ester