Inverse Peptide Synthesis via Activated α-Aminoesters
作者:Jean-Simon Suppo、Gilles Subra、Matthieu Bergès、Renata Marcia de Figueiredo、Jean-Marc Campagne
DOI:10.1002/anie.201402147
日期:2014.5.19
procedure for peptide‐bond formation is reported. Instead of activation of the carboxylic acid functionality, the reaction involves an unprecedented use of activated α‐aminoesters. The method provides a straightforward entry to dipeptides and was effective when a sensitive cysteine residue was used, as no epimerization was detected in this case. The applicability of this method to iterative peptide synthesis
A Lewis-acid-catalyzed method for the substrate-directed formation of peptide bonds has been developed, and this powerful approach is utilized for the new "remote" activation of carboxyl groups under solvent-free conditions. The presented method has the following advantages: 1) the high-yielding peptidesynthesis uses a tantalum catalyst for any amino acids; 2) the reaction proceeds without any racemization;
Totalsynthesis of a lanthionine peptide nisin was achieved by the successive condensations of four segments including cyclic lanthionine peptide parts and the C-terminal linear segment including dehydroalanine, followed by the deprotection procedure with anhydrous HF. Modified reaction conditions for the Hofmann degradation were applied to prepare the dehydroalanine residue from the 2,3-diaminopropionic
羊毛硫氨酸肽乳链菌肽的全合成是通过包括环状羊毛硫氨酸肽部分和 C 端线性部分(包括脱氢丙氨酸)在内的四个部分的连续缩合,然后用无水 HF 进行脱保护程序来实现的。应用改进的霍夫曼降解反应条件从 2,3-二氨基丙酸残基制备脱氢丙氨酸残基。用无水HF进行最终脱保护,脱氢氨基酸残基没有分解,脱氢氨基酸残基通常在酸性介质中不稳定。合成乳链菌肽在所有方面都与天然乳链菌肽完全相同,从而证实了所提出的结构。
METHOD FOR PRODUCING AMIDE COMPOUND
申请人:CHUBU UNIVERSITY EDUCATIONAL FOUNDATION
公开号:US20200131117A1
公开(公告)日:2020-04-30
Provided is a novel method for producing amide compounds at high stereochemical selectivities. The method according to the present invention for producing amide compounds is provided with an amidation step for reacting, in the presence of a catalyst comprising a metal compound, an amino compound with an aminoester compound represented by general formula (1) to amidate the ester group in the aminoester compound.