4-O-methyl-1,2,3-O-benzyl-β-D-glucopyranoside 、 ((3R,4R)-4-Benzyloxy-6-fluoro-tetrahydro-pyran-3-yl)-carbamic acid tert-butyl ester 在
silver perchlorate 、 tin(ll) chloride 作用下,
以
四氢呋喃 为溶剂,
以36%的产率得到[(3R,4R,6S)-4-Benzyloxy-6-((2R,3R,4S,5R,6R)-4,5,6-tris-benzyloxy-3-methoxy-tetrahydro-pyran-2-ylmethoxy)-tetrahydro-pyran-3-yl]-carbamic acid tert-butyl ester