Peptide Bond Formation of Amino Acids by Transient Masking with Silylating Reagents
作者:Wataru Muramatsu、Hisashi Yamamoto
DOI:10.1021/jacs.1c02600
日期:2021.5.12
A one-pot peptide bond-forming reaction has been developed using unprotected amino acids and peptides. Two different silylating reagents, HSi[OCH(CF3)2]3 and MTBSTFA, are instrumental for the successful implementation of this approach, being used for the activation and transient masking of unprotected amino acids and peptides at C-termini and N-termini, respectively. Furthermore, CsF and imidazole
Synthesis of Silacyclic Dipeptides: Peptide Elongation at Both N- and C-Termini of Dipeptide
作者:Tomohiro Hattori、Hisashi Yamamoto
DOI:10.1021/jacs.1c11260
日期:2022.2.2
A new type of peptide bond formation utilizing silacyclic aminoacids or peptides is described. This work has the following advantages: (1) imidazolylsilane is a highly fascinating coupling reagent for dipeptide synthesis from N-,C-terminal unprotected aminoacids with aminoacid tert-butyl esters; (2) deprotection of the tert-butyl ester at the C-terminus and cyclization sequentially proceed depending