Identification by mass spectrometry of N-(1-deoxyhexitol-1yl)amino acids, reference compounds for the nonenzymic glycosylation of proteins
作者:Donald J. Walton、Walter A. Szarek、David B. Maclean、Robert V. Gerard
DOI:10.1016/0008-6215(85)85147-8
日期:1985.3
synthetic N -(1-deoxy- d -glucitol-1-yl)- and N -(1-deoxy- d -mannitol-1-yl)amino acids have been examined by mass spectrometry and gas—liquid chromatography—mass spectrometry. Electron impact resulted in cleavage between C-1 and C-2, and between the carbonyl carbon and α-carbon atom, to form ions that allow the amino acid portion of the molecule to be identified. Molecular weights were obtained from
摘要通过质谱和气相色谱法研究了合成的N-(1-脱氧-d-葡萄糖醇-1-基)-和N-(1-脱氧-d-甘露醇-1-基)氨基酸的三甲基甲硅烷基衍生物。 -质谱。电子的撞击导致C-1和C-2之间以及羰基碳和α-碳原子之间的裂解,从而形成可识别分子氨基酸部分的离子。从化学电离光谱获得分子量,以氨作为反应气。这些方法将用于鉴定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)氨基酸的氨基酸部分将其用硼氢化钠还原,并将产物在酸的存在下水解。