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
从L-胱氨酸开始,天然产物bacillamide B的简明总合成以30%的总收率完成。关键步骤是通过使用β-叠氮基二硫化物和羧酸作为底物的级联二硫键裂解/硫代羰基化/ Staudinger还原/氮杂-Wittig反应,通过一锅四步法形成噻唑啉。再次确认天然bacillamide B的绝对构型为S,并且将比旋光度修改为(-)。