Hydrazinolysis of monosaccharides: a two-step synthesis of chiral pentane-1,2,3-triols from pentoses and observations on the hydrazinolysis of glycoproteins and glycopeptides
作者:J.Michael Williams
DOI:10.1016/0008-6215(84)85085-5
日期:1984.5
formed in various proportions from d -glucose, d -mannose, l -arabinose, and d -xylose by the action of refluxing hydrazine. Sequential hydrazinolysis, catalytic hydrogenation, and chromatography afford a route to 1,2-dideoxyalditols. For example, 1,2-dideoxy- l -erythro-pentitol is formed from l -arabinose in 42% yield, and d -xylose is a source of 1,2-dideoxy- d -threo-pentitol (50%). Under the conditions
摘要在回流肼的作用下,由d-葡萄糖,d-甘露糖,l-阿拉伯糖和d-木糖以各种比例形成1,2-二脱氧醛糖醇,相应的1-烯烃和1-脱氧醛糖醇。顺序肼解,催化氢化和色谱法提供了通往1,2-二脱氧醛糖醇的途径。例如,由1-阿拉伯糖以42%的收率形成1,2-二脱氧-1-戊-戊醇,而d-木糖是1,2-二脱氧-d-苏-戊醇的来源(50%)。在蒙特勒(Montreuil)用于糖蛋白和糖肽肼解的条件下(无空气下在100°C的无水肼放置30小时),没有形成1,2-二脱氧醛糖醇。降解不完全,存在一些醛糖。在Kochetkov的肼解条件下(用硫酸肼在105°下放置10 h),