benzyl 2,4,6-tri-O-benzoyl-α-D-mannopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-α-D-mannopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-α-D-mannopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-α-D-mannopyranosyl-(1->2)-3,4,6-tri-O-benzoyl-α-D-mannopyranoside 在
甲醇 、
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 6.0h,
以67%的产率得到(2R,3S,4S,5S,6R)-2-{[(2R,3S,4S,5R,6R)-2-{[(2R,3S,4S,5R,6R)-2-{[(2R,3S,4S,5R,6R)-2-{[(2S,3S,4S,5S,6R)-2-(benzyloxy)-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy}-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy}-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy}-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy}-6-(hydroxymethyl)oxane-3,4,5-triol