(2S,4S,5R,6R)-2-[(2R,3S,4S,5R,6R)-2-((2S,3S,4S,5R,6R)-2-Allyloxy-4,5-bis-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-3-yloxy)-4,5-bis-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-3-yloxy]-4,5-bis-benzyloxy-6-benzyloxymethyl-dihydro-pyran-3-one 在
L-Selectride 作用下,
以
四氢呋喃 为溶剂,
以1.16 g的产率得到allyl (3,4,6-tri-O-benzyl-β-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->2)-3,4,6-tri-O-benzyl-α-D-mannopyranoside