[(2R,3R,4S,5R)-3-[3-[(2R,3R,4R,5S,6R)-3-acetamido-6-[[(2R,3R,4S,5R,6R)-5-[3-[(2R,3R,4R,5S,6R)-3-acetamido-4,5-diacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxypropoxy]-3,4-diacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxymethyl]-4,5-diacetyloxyoxan-2-yl]oxypropoxy]-4,5-diacetyloxy-6-hydroxyoxan-2-yl]methyl acetate 在
4 A molecular sieve 、
三氟化硼乙醚 、
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
二氯甲烷 为溶剂,
反应 4.0h,
生成
allyl 2,3,6-tri-O-acetyl-4-O-{3-[2,3,6-tri-O-acetyl-4-O-[3-(2-acetamido)-3,4,6-tri-O-acetyl-2-deoxy-β-D-glucopyranosyloxy)propyl]-β-D-glucopyranosyl}-(1->6)-[2-acetamido-3,4-di-O-acetyl-2-deoxy-β-D-glucopyranosyloxy)propyl-β-D-glucopyranoside