(2R,3S,6S)-3-Benzyloxy-2-benzyloxymethyl-6-((2S,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-benzyloxymethyl-6-methoxy-tetrahydro-pyran-3-ylmethyl)-5-[1-((2S,3R,4R,5R,6S)-3,4,5-tris-benzyloxy-6-methyl-tetrahydro-pyran-2-yl)-meth-(Z)-ylidene]-tetrahydro-pyran-4-one 在
偶氮二异丁腈 、
三正丁基氢锡 作用下,
以
苯 为溶剂,
反应 10.0h,
以85%的产率得到(2S,3S,5S,6R)-2-[[(2S,3R,4S,5R,6S)-6-methoxy-4,5-bis(phenylmethoxy)-2-(phenylmethoxymethyl)oxan-3-yl]methyl]-3-[[(2S,3R,4R,5R,6S)-6-methyl-3,4,5-tris(phenylmethoxy)oxan-2-yl]methyl]-5-phenylmethoxy-6-(phenylmethoxymethyl)oxan-4-one