methyl 1-O-tert-butyldimethylsilyl-2-O-benzoyl-3-O-benzyl-β-D-glucopyranuronate 、
2-azido-6-O-tert-butyldiphenylsilyl-2-deoxy-4-O-levulinyl-3-O-(4-methoxybenzyl)-D-glucopyranosyl trichloroacetimidate 在
叔丁基二甲硅基三氟甲磺酸酯 作用下,
以
甲苯 为溶剂,
以83%的产率得到methyl [2-azido-6-O-tert-butyldiphenylsilyl-2-deoxy-4-O-levulinyl-3-O-(4-methoxybenzyl)-α-D-glucopyranosyl]-(1->4)-1-O-tert-butyldimethylsilyl-2-O-benzoyl-3-O-benzyl-β-D-glucopyranuronate