[(2R,3R,4R,5R,6R)-3,4,5-triacetoxy-6-[2-[7-[2-[(2R,3R,4R,5R,6R)-3,4,5-triacetoxy-6-(acetoxymethyl)tetrahydropyran-2-yl]ethynyl]spiro[fluorene-9,4'-tetrahydropyran]-2-yl]ethynyl]tetrahydropyran-2-yl]methyl acetate 在
甲醇 、
sodium methylate 作用下,
反应 18.0h,
以9.38 g的产率得到(2R,2'R,3S,3'S,4R,4'R,5S,5'S,6R,6'R)-6,6'-((2',3',5',6'-tetrahydrospiro[fluorene-9,4'-pyran]-2,7-diyl)bis(ethyne-2,1-diyl))bis(2-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol)