Synthesis of N-(1-deoxyhexitol-1-yl)amino acids, reference compounds for the nonenzymic glycosylation of proteins
作者:Donald J. Walton、Edward R. Ison、Walter A. Szarek
DOI:10.1016/0008-6215(84)85082-x
日期:1984.5
The N-(1-deoxy-D-mannitol-1-yl) and N-(1-deoxy-D-glucitol-1-yl) derivatives of L-valine, L-alanine, L-threonine, and L-leucine were prepared by reductive amination of D-mannose and D-glucose with the appropriate amino acids, in the presence of sodium cyanoborohydride. N epsilon-(1-Deoxy-D-mannitol-1-yl)- and N epsilon-(1-deoxy-D-glucitol-1-yl)-L-lysine were prepared by similar reactions of hexoses
L-缬氨酸,L-丙氨酸,L-苏氨酸和L-亮氨酸的N-(1-脱氧-D-甘露醇-1-基)和N-(1-脱氧-D-葡萄糖醇-1-基)衍生物在氰基硼氢化钠存在下,通过用适当的氨基酸还原胺化D-甘露糖和D-葡萄糖来制备糖。Nε-(1-脱氧-D-甘露醇-1-基)-和Nε-(1-脱氧-D-葡萄糖醇-1-基)-L-赖氨酸是通过己糖与Nα-叔胺的类似反应制备的-丁氧基羰基和Nα-苄氧基羰基-L-赖氨酸,然后除去保护基。结构通过1H-nmr光谱确认,表明每种化合物完全不含其C-2差向异构体。这些合成化合物可用作参考化合物,用于鉴定当非对称糖基化蛋白的N-(1-脱氧-D-果糖-1-基)基团形成时形成的N-(1-脱氧己糖醇-1-基)氨基酸,