benzyl 3,4,6-tri-O-benzyl-2-deoxy-2-C-formyl-α-D-glucopyranoside 、
2-((2R,3S,4S,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-3-trimethylsilanyloxy-tetrahydro-pyran-2-sulfonyl)-pyridine 在
samarium diiodide 作用下,
以75%的产率得到((2R,3S,4S,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-3-trimethylsilanyloxy-tetrahydro-pyran-2-yl)-((2S,3R,4R,5S,6R)-2,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-3-yl)-methanol