An efficient approach to N-acetyl-d-glucosaminuronic acid-based sialylmimetics as potential sialidase inhibitors
作者:Maretta C. Mann、Robin J. Thomson、Mark von Itzstein
DOI:10.1016/j.bmcl.2004.08.064
日期:2004.11
the synthesis of beta-glycosides of N-acetyl-D-glucosaminuronic acid, in six steps and good overall yield from N-acetyl-d-glucosamine, has been developed. The key synthetic step was the Lewis acid mediated O-glycosidation of methyl 1,3,4-tri-O-pivaloyl-N-acetyl-D-glucosaminuronate (11). Elaboration of glucosaminuronides 15 and 18 provided novel sialylmimetics 21 and 22, which showed inhibition of Vibrio
已经开发出一种新颖的方法,该方法以六个步骤合成了N-乙酰基-D-葡萄糖氨基糖醛酸的β-糖苷,并且从N-乙酰基-d-葡糖胺获得了良好的总收率。关键的合成步骤是路易斯酸介导的1,3,4-三-O-新戊酰基-N-乙酰基-D-氨基葡萄糖氨基磺酸甲酯的O-糖基化作用(11)。精心设计的葡糖氨基核苷15和18提供了新的唾液酸模拟物21和22,其显示了霍乱弧菌唾液酸酶的抑制作用。