Synthesis of Mesoionic Triazolopyridine. III. Applications of<i>N</i>-Acyl Mesoionic Triazolopyridines as Acylating Reagents
作者:Akio Saito、Bunji Shimizu
DOI:10.1246/bcsj.56.2974
日期:1983.10
Utility of N-acyl mesoionic triazolopyridines as acylating reagents was investigated concerning with peptide synthesis. Several dipeptides and N-alkoxycarbonyl amino acids were prepared by use of these reagents.
Triethyl phosphite and iodine in solution give triethoxydi-iodophosphorane. This has a half life in solution of several days and can be used as a dehydrating or condensingagent.
Amino-acids and peptides. Part XXVIII. Anchimeric acceleration of the aminolysis of esters. The use of mono-esters of catechol in peptide synthesis
作者:J. H. Jones、G. T. Young
DOI:10.1039/j39680000436
日期:——
hypothesis that the aminolysis of esters can be accelerated by a neighbouring group capable of hydrogen-bonding to the incoming amine and accepting a proton from it has been supported by further evidence. Since such acceleration is not available for oxazolone formation (in which the nucleophile bears no hydrogen) it becomes possible to design fast, racemisation-free methods of peptidesynthesis. Phthaloylglycine