Acetic acid (3S,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-[(3aR,5R,6S,6aR)-5-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yloxy]-tetrahydro-pyran-3-yl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
生成
1,2:5,6-di-O-isopropylidene-3-O-(3,4,6-tri-O-benzyl-β-D-mannopyranosyl)-α-D-glucofuranose 、
1,2:5,6-di-O-isopropylidene-3-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-α-D-glucofuranose