(2R,3S,4S,5R,6S)-3,5-Bis-benzyloxy-2-benzyloxymethyl-6-methoxy-tetrahydro-pyran-4-ol 、
2,3,4-tri-O-benzyl-6-O-diethylthiocarbamoyl-β-D-glucopyranosyl fluoride 在
高氯酸 、 5A molecular sieve 作用下,
以
乙醚 为溶剂,
反应 4.0h,
生成 O-[[(2R,3R,4S,5R,6R)-6-[(2S,3R,4S,5R,6R)-2-methoxy-3,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-4-yl]oxy-3,4,5-tris(phenylmethoxy)oxan-2-yl]methyl] N,N-diethylcarbamothioate