Decarbonylative Approach to the Synthesis of Enamides from Amino Acids: Stereoselective Synthesis of the (<i>Z</i>)-Aminovinyl-<scp>d</scp>-Cysteine Unit of Mersacidin
作者:Pablo García-Reynaga、Angela K. Carrillo、Michael S. VanNieuwenhze
DOI:10.1021/ol203399x
日期:2012.2.17
The Pd- and Ni-promoted decarbonylation of aminoacid thioesters proceeds smoothly to yield enamides. The synthesis of the (S)-(Z)-AviMeCys subunit of mersacidin, an MRSA-active lantibiotic, via this approach, is described.
Pd 和 Ni 促进的氨基酸硫酯脱羰反应顺利进行,生成烯酰胺。描述了通过这种方法合成MRSA 活性羊毛硫抗生素 mersacidin的 ( S )-( Z )-AviMeCys 亚基。
The Trifluoroacetate Method of Peptide Synthesis. I. The Synthesis and Use of Trifluoroacetate Reagents
作者:Shumpei Sakakibara、Noriyoshi Inukai
DOI:10.1246/bcsj.38.1979
日期:1965.11
thiophenol and N-hydroxyimide derivatives, which are known as hydroxylic partners of various active carboxylic acid ester, have been synthesized, and it has been found that they are good reagents for the preparation of the respective active esters of acylamino acids by the ester-exchange reaction in pyridine. The new method is especially effective in the preparation of p-nitrophenyl, 2,4,5-trichlorophenyl
Diverse thiolesters were synthesized in good to excellent yields (76-99%) by reactions of thiophenol, benzyl mercaptan, ethyl mercaptoacetate, and mercaptoacetic acid with N-acylbenzotriazoles under mild conditions. These results demonstrate the utility of N-acylbenzotriazoles as mild S-acylating agents, especially when the corresponding acid chlorides are not readily available.
The mass spectra of amino-acid and peptide derivatives. Part I. Benzyloxycarbonyl derivatives
作者:R. T. Aplin、J. H. Jones、B. Liberek
DOI:10.1039/j39680001011
日期:——
a benzyloxy-radical in addition to showing the well recognised cleavages of the peptide bonds and side-chains. Cleavage of the peptide bond gives important fragments of type PhCH2·O·CO·[graphic omitted]H:CHR which then lose carbon dioxide with concomitant migration of the benzyl group. Some benzyloxycarbonyl amino-acid and dipeptide phenylthio-esters have also been examined: the peak of highest m/e
A side-chain photoactivatable auxiliary-mediated native chemical peptide ligation
作者:Avijit K. Adak、Yung-Yu Su、Wei-Hao Wang、Chin-Lan Lin、Hao Gu、Yi-Chen Huang、Zhe-Jie Zhang、Chai-Lin Kao、Chun-Cheng Lin
DOI:10.1016/j.tet.2023.133554
日期:2023.9
Photoactivatable ligationauxiliaries present an attractive approach for expanding the applicability of nativechemicalligation (NCL). In contrast to thiol-based mercaptobenzyl-type ligation scaffolds, photoactivatable auxiliaries are cleaved after ligation by photolysis, thereby simplifying protein assembly in non-cysteine NCL and causing minimal perturbation to the native polypeptide chains. This