3,4,6-tri-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl trichloroacetimidate 、 allyl O-(3,6-di-O-allyl-2-O-benzyl-β-D-mannopyranosyl)-(1->4)-O-(3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->4)-3-O-benzyl-2-deoxy-6-O-p-methoxyphenyl-2-phthalimido-β-D-glucopyranoside 在
三氟化硼乙醚 作用下,
以94%的产率得到[(2,4-二溴-5-甲基苯氧基)甲基]噁丙环