Benzotriazol-1-yl-sulfonyl Azide for Diazotransfer and Preparation of Azidoacylbenzotriazoles
作者:Alan R. Katritzky、Mirna El Khatib、Oleg Bol’shakov、Levan Khelashvili、Peter J. Steel
DOI:10.1021/jo101296s
日期:2010.10.1
Benzotriazol-1-yl-sulfonyl azide, a new crystalline, stable, and easily available diazotransfer reagent provides N-(α-azidoacyl)benzotriazoles convenient for N-, O-, C- and S-acylations. The efficient syntheses of various amides, azido protected peptides, esters, ketones and thioesters is reported together with a wide range of azides (including α-azido acids from α- amino acids in partially aqueous conditions) and
One-Pot Enantiomeric Synthesis of Thiazole-Containing Amino Acids: Total Synthesis of Venturamides A and B
作者:Yi Liu、Peng He、Yang Zhang、Xiangyu Zhang、Jun Liu、Yuguo Du
DOI:10.1021/acs.joc.8b00244
日期:2018.4.6
thiazole-containing amino acid (TCAA) has been established via a cascade disulfide cleavage/thiocarbonylation/intramolecular Staudinger reduction/aza-Wittig/oxidation reaction. Starting from the commercially available amino acid building blocks, a number of TCAAs were prepared in good yields and with excellent optical purities. This method bears features of mildreactionconditions, wide substrate adaptability
Synthesis and structural reconfirmation of bacillamide B
作者:Xue Sun、Yi Liu、Jun Liu、Guofeng Gu、Yuguo Du
DOI:10.1039/c5ob00093a
日期:——
A concise total synthesis of the natural product bacillamide B was accomplished in 30% overall yield starting from L-cystine. The key step was a one-pot four-step process of thiazoline formation via a cascade disulfide cleavage/thiocarbonylation/Staudinger reduction/aza-Wittig reaction using β-azido disulfide and carboxylic acid as substrates. The absolute configuration of the natural bacillamide B