描述了从黄杆菌粘球菌分离的新型抗真菌物质粘噻唑1的全合成。该合成基于SE,E-二烯硫酰胺1 5和作为主要中间体的2 R S,3 S R酰胺醛2 5的精细制备,然后将1 5转化为双-噻唑1 9和最终的Wittig偶联反应之间2 5和盐2 0℃,导致7小号,18 S R,19 - [R小号myxothiazol。
描述了从黄杆菌粘球菌分离的新型抗真菌物质粘噻唑1的全合成。该合成基于SE,E-二烯硫酰胺1 5和作为主要中间体的2 R S,3 S R酰胺醛2 5的精细制备,然后将1 5转化为双-噻唑1 9和最终的Wittig偶联反应之间2 5和盐2 0℃,导致7小号,18 S R,19 - [R小号myxothiazol。
Total synthesis of myxothiazols, novel bis-thiazole β-methoxyacrylate-based anti-fungal compounds from myxobacteria
作者:John M. Clough、Henry Dube、Bruce J. Martin、Gerald Pattenden、K. Srinivasa Reddy、Ian R. Waldron
DOI:10.1039/b603433k
日期:——
Convergent total syntheses of myxothiazols A and Z are described. The syntheses are based on elaboration of the (S)-E,E-diene thioamide 22, conversion of 22 into the bis-thiazole 27 and Wittig reactions between 27c and the aldehyde 30. The substituted beta-methoxyacrylate aldehyde 30 was produced via an Evans asymmetric aldol protocol or via the 2H-pyran-2-one 31. An E-selective Wittig reaction between