作者:Kenichi Akaji、Yoshiaki Kiso
DOI:10.1016/s0040-4020(99)00604-3
日期:1999.8
A method for total synthesis of thiangazole (1), a tris-thiazoline-oxazole metabolite, is described. The key intermediate 9, a linear tetrapeptide amide composed of three S-benzyl-2-methylcysteine residues and a O-benzyl-threonine amide, was synthesized in 4 steps using 2-chloro-1,3-dimethyl-imidazolidium hexafluorophosphate(CIP)-mediated activation. The successive thiazoline/oxazole rings were constructed
描述了全合成噻唑(1),一种三噻唑啉-恶唑代谢物的方法。使用2-氯-1,3-二甲基-咪唑六氟磷酸盐(CIP)分四步合成了关键中间体9,即由三个S-苄基-2-甲基半胱氨酸残基和一个O-苄基苏氨酸酰胺组成的线性四肽酰胺介导的激活。连续的噻唑啉/恶唑环是通过TiCl 4介导的环脱水反应,然后无困难地通过酸催化的Robinson-Gabriel反应构建的。