SYNTHESIS OF PEPTIDES CONTAINING HYDROXYAMINO ACIDS BY THE MIXED ANHYDRIDE METHOD WITHOUT PROTECTING THE HYDROXYL FUNCTIONS
作者:Masaaki Ueki、Toshiyuki Inazu
DOI:10.1246/cl.1982.45
日期:1982.1.5
Dimethylphosphinothioyl(Mpt) mixedanhydrides of N-protected amino acids were found to be isolatably stable and useful for the synthesis of hydroxyamino acid containing peptides without protecting the side-chain hydroxyl functions. They were applied for the solid phase synthesis of an enkephalin analog extended at C-terminal.
发现 N 保护氨基酸的二甲基硫代膦酰 (Mpt) 混合酸酐可分离稳定,可用于合成含羟基氨基酸的肽,而无需保护侧链羟基官能团。它们被应用于在 C 端延伸的脑啡肽类似物的固相合成。
Photochemical Chemoselective Alkylation of Tryptophan-Containing Peptides
作者:Benjamin Laroche、Xinjun Tang、Gaétan Archer、Riccardo Di Sanza、Paolo Melchiorre
DOI:10.1021/acs.orglett.0c03735
日期:2021.1.15
report a photochemical method for the chemoselective radical functionalization of tryptophan (Trp)-containing peptides. The method exploits the photoactivity of an electron donor–acceptor complex generated between the tryptophan unit and pyridinium salts. Irradiation with weak light (390 nm) generates radical intermediates right next to the targeted Trp amino acid, facilitating a proximity-driven radical
Site-selective modification of peptides using rhodium and palladium catalysis: complementary electrophilic and nucleophilic arylation
作者:Christopher J. Chapman、Ai Matsuno、Christopher G. Frost、Michael C. Willis
DOI:10.1039/b711533d
日期:——
The site-selective modification of peptides containing dehydroalanine, tyrosine and tryptophan residues has been achieved using rhodium catalysed conjugate additions or palladium catalysed aryl-amination and -etherification reactions.
Cu-Catalyzed Site-Selective C(sp<sup>2</sup>)–H Radical Trifluoromethylation of Tryptophan-Containing Peptides
作者:Itziar Guerrero、Arkaitz Correa
DOI:10.1021/acs.orglett.0c00033
日期:2020.3.6
Site-selective functionalization of C-H bonds within a peptide framework poses a challenging task of paramount synthetic relevance. Herein, we report an operationally simple C(sp2)-H trifluoromethylation of tryptophan (Trp)-containing peptides. This fluorination technique is characterized by its chirality preservation, tolerance of functional groups, and scalability and exhibits chemoselectivity for