Model studies pertaining to the hydrazinolysis of glycopeptides and glycoproteins: hydrazinolysis of the 1-N-acetyl and 1-N-(l-β-aspartyl) derivatives of 2-acetamido-2-deoxy-β-d-glucopyranosylamine
作者:May S. Saeed、J.Michael Williams
DOI:10.1016/s0008-6215(00)85432-4
日期:1980.9
Abstract The products of hydrazinolysis of the 1- N -acetyl and 1- N -( l -β-aspartyl) derivatives of 2-acetamido-2-deoxy-β- d -glucopyranosylamine could not be converted quantitatively into 2-amino-2-deoxy- d -glucose under mild conditions. Proton and 13 C-n.m.r. measurements indicated that the hydrazone of 2-amino-2-deoxy- d -glucose was a major product of the hydrazinolysis of 2-acetamido-1- N -acetyl-2-deoxy-β-
摘要2-乙酰氨基-2-脱氧-β-d-吡喃葡萄糖胺的1-N-乙酰基和1-N-(l-β-天冬氨酰)衍生物的肼解产物不能定量地转化为2-氨基-2 -脱氧-d-葡萄糖在温和的条件下。质子和13 Cn.mr测量表明2-氨基-2-脱氧-d-葡萄糖的zone是2-乙酰氨基-1-N-乙酰基-2-脱氧-β-d-吡喃葡萄糖胺的肼解作用的主要产物。对照实验表明,乙酰肼在肼解条件下缓慢转化为4-氨基-3,5-二甲基-1,2,4-三唑,2-氨基-2-脱氧-d-葡萄糖与乙酰肼反应缓慢。在稀乙酸中。讨论了这些结果与糖肽和糖蛋白的肼解作用有关。