2,6-dimethoxyphenyl 3,4,6-tri-O-benzyl-β-D-glucopyranoside 、 Acetic acid (2S,3S,4S)-6-benzenesulfinyl-4-benzyloxycarbonylamino-2,4-dimethyl-tetrahydro-pyran-3-yl ester 在
2,6-二叔丁基-4-甲基吡啶 、
三氟甲磺酸酐 作用下,
以
乙醚 为溶剂,
反应 0.5h,
以71%的产率得到Acetic acid (2S,3S,4S,6S)-4-benzyloxycarbonylamino-6-[(2S,3R,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-(2,6-dimethoxy-phenoxy)-tetrahydro-pyran-3-yloxy]-2,4-dimethyl-tetrahydro-pyran-3-yl ester