📜N-苄氧羰基-L-谷氨酸置于氨,N,N'-二环己基碳二亚胺体系中,用 甲醇 作为反应溶剂,化学反应生成 Z-谷氨酰胺对硝基苯酯 参考文献:The Carbohydrate-protein Linkage In Glycoproteins: Part I. The Syntheses Of Some Model Substituted Amides And An L-Seryl-D-Glucosaminide 标题:The Carbohydrate-protein Linkage In Glycoproteins: Part I. The Syntheses Of Some Model Substituted Amides And An L-Seryl-D-Glucosaminide 摘要:描述了n-L-丝氨酸-D-葡萄糖胺,N-甘氨酰-D-葡萄糖胺,N-L-谷氨酰-D-葡萄糖胺和1-O-β-L-丝氨酰-N-乙酰-D-葡萄糖氨基葡萄糖的合成.这些d-葡萄糖胺衍生物可能来自一些糖蛋白的分解.这些化合物的化学性质表明,N-肽在酸性溶液中相对稳定,但在中性和碱性溶液中不稳定.丝氨酰葡萄糖胺在碱性溶液中相对稳定,但在酸性条件下会水解. DOI:10.1139/v61-125
专利号:US-4301065-A 优先权日:1977-05-25 标 题 :Novel polypeptides having thymic activity or an antagonistic activity and processes for their synthesis 发明人:BACH JEAN-FRANCOIS; DARDENNE MIREILLE; PLEAU JEAN-MARIE; HAMBURGER JEAN; BRICAS EVANGHELOS; MARTINEZ JEAN; BLANOT DIDIER; AUGER GENEVIEVE 权利人:ANVAR 摘要:The invention is concerned with novel polypeptides and processes for the synthesis thereof. It is concerned with compounds having the sequence X-Gln-Gly-Gly-Y in which Y represents -Ser-Asn and X represents Ser-, Lys-Ser-, Ala-Lys-Ser-, Glx-Ala-Lys-Ser-; Glx representing Pyro-Glu or Gln; and when X represents Glx-Ala-Lys-Ser-, Y may in addition represent -Ser; as well as their derivatives comprising one or two modified amino acids, with the exception of the unmodified compound PyroGlu-Ala-Lys-Ser-Gln-Gly-Ser-Asn. These polypeptides are useful as medicines.
专利号:US-3862113-A 优先权日:1972-09-22 标 题 :Process for the selective elimination of aralkyloxycarbonyl and trityl n-protecting groups with 2,2,2-trifluoroethanol 发明人:RINIKER BERNHARD; KAMBER BRUNO; SIEBER PETER 权利人:CIBA GEIGY CORP 摘要:A process for the selective elimination of amino protective groups in peptide synthesis, wherein the trityl group and/or an aralkyloxycarbonyl group such as the 2-(p-bi-phenylyl)-2propyloxycarbonyl group is (are) split off in trifluorethanol at a pH of about 4 or 1, respectively.