Aziridine based electrophilic handle for aspartic acid ligation
作者:Kiran Bajaj、Devesh S. Agarwal、Rajeev Sakhuja、Girinath G. Pillai
DOI:10.1039/c8ob00676h
日期:——
A one-pot ligation strategy at asparticacid junctions has been developed by successfully incorporating aziridin-2,3-dicarboxylate to the N-side of a peptide fragment, affording N-aziridine appended peptides, which were ligated in solution phase with a variety of small peptide thio acids to afford native peptides, following a ring-opening/peptidyl migration/desulfurization strategy. The reaction proceeds
Amino Acid and Peptide Synthesis and Functionalization by the Reaction of Thioacids with 2,4-Dinitrobenzenesulfonamides
作者:David Crich、Kasinath Sana、Songpo Guo
DOI:10.1021/ol701583t
日期:2007.10.1
[GRAPHICS]Readily prepared amino thioacids react at room temperature in DMF in the presence of cesium carbonate with 2,4-dinitrobenzenesulfonamides to give amides. When the sulfonamide is derived from an amino acid the method results in peptide bond formation, whereas the use of carbohydrate derived sulfonamides gives neoglycoconjugates.
A Facile Synthesis of Thioacids from N-Acylbenzotriazoles
Protected amino/peptide thioacids have been synthesized in pure form in excellent yields and with retention of chirality by using protected aminoacyl- and peptidoylbenzotriazoles as active intermediates.