2-S-acetylthioethyl 3,6-di-O-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-2,4-di-O-benzoyl-α-D-mannopyranoside 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以93%的产率得到(2S,3S,4S,5S,6R)-2-[[(2R,3R,4S,5S,6S)-3,5-dihydroxy-6-(2-sulfanylethoxy)-4-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methoxy]-6-(hydroxymethyl)oxane-3,4,5-triol