[(2R,3R,4S,5R,6R)-4,5-diacetyloxy-3-[(2R,3S,4R,5R,6S)-3,5-diacetyloxy-4-phenylmethoxy-6-[[(2R,3R,4S,5S,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxymethyl]oxan-2-yl]oxy-6-(2-trimethylsilylethoxy)oxan-2-yl]methyl acetate 在
zinc(II) chloride
1,1-二氯甲醚 作用下,
以
二氯甲烷 为溶剂,
以95%的产率得到Acetic acid (2R,3R,4S,5R,6R)-3-acetoxy-6-acetoxymethyl-2-chloro-5-[(2R,3S,4R,5R,6S)-3,5-diacetoxy-4-benzyloxy-6-((2R,3R,4S,5S,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxymethyl)-tetrahydro-pyran-2-yloxy]-tetrahydro-pyran-4-yl ester