描述了一些含有 α-氨基腈作为其 C 端残基的二肽的合成。N-三苯甲基氨基酸的活性酯、对硝基苯酯或氰基甲酯与α-氨基腈的偶联反应在N,N-二甲基甲酰胺中进行。反应产物的N-三苯甲基保护基团通过酸水解被去除而不影响它们的腈基团。以此方式合成了甘氨酰氨基乙腈乙酸酯(8)、甘氨酰-DL-α-氨基丙腈乙酸酯(10)和DL-丙氨酰氨基乙腈乙酸酯(11)。
Verdoppelungsreaktionen beim Ringschluss von Peptiden. II. Cyclo-glycyl-glycyl-DL-phenylalanyl-glycyl-glycyl-DL-phenylalanyl. Verwendung aktivierter Ester zur Synthese makrocyclischer Peptide. Molekulargewichtsbestimmungen in Dimethylsulfoxyd. 8. Mitteilu
作者:R. Schwyzer、P. Sieber
DOI:10.1002/hlca.19580410728
日期:——
New combinations of activated ester groupings with N-substituents are described for preparing activated esters of peptides which may be used for cyclization (to homodetic cyclic polypeptides). Various activated esters of glycyl-glycyl-DL-phenylalanine and glycyl-DL-phenylalanyl-glycine yield cyclo-glycyl-glycyl-DL-phenylalanyl-glycyl-glycyl-DL-phenylalanyl. These reactions present new examples for