[(2R,3R,4R,5R,6R)-3,4,5-triacetoxy-6-[2-[9,9-dimethyl-7-[2-[(2R,3R,4R,5R,6R)-3,4,5-triacetoxy-6-(acetoxymethyl)tetrahydropyran-2-yl]ethynyl]fluoren-2-yl]ethynyl]tetrahydropyran-2-yl]methyl acetate 在
甲醇 、
sodium methylate 作用下,
反应 1.0h,
以76%的产率得到(2R,3S,4R,5S,6R)-2-[2-[9,9-dimethyl-7-[2-[(2R,3S,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-yl]ethynyl]fluoren-2-yl]ethynyl]-6-(hydroxymethyl)tetrahydropyran-3,4,5-triol