Discovery, Total Synthesis, and SAR of Anaenamides A and B: Anticancer Cyanobacterial Depsipeptides with a Chlorinated Pharmacophore
作者:David A. Brumley、Sarath P. Gunasekera、Qi-Yin Chen、Valerie J. Paul、Hendrik Luesch
DOI:10.1021/acs.orglett.0c01281
日期:2020.6.5
New modified depsipeptides and geometric isomers, termed anaenamides A (1a) and B (1b), along with the presumptive biosynthetic intermediate, anaenoic acid (2), were discovered from a marine cyanobacterium from Guam. Structures were confirmed by total synthesis. The alkylsalicylic acid fragment and the C-terminal α-chlorinated α,β-unsaturated ester are novelties in cyanobacterial natural products.
从关岛的海洋蓝细菌中发现了新的修饰的十肽和几何异构体,称为酰胺A(1a)和B(1b),以及假定的生物合成中间体花生酸(2)。通过全合成确认结构。在蓝藻天然产物中,烷基水杨酸片段和C端α-氯代α,β-不饱和酯是新颖的。癌细胞活力分析表明,C末端单元起药效基团作用,双键几何结构影响细胞毒性。