A short and convergent strategy for the stereoselective total synthesis of biologically active natural product carolacton has been accomplished. Our synthesis highlights the Urpi acetal aldol, Crimmins aldol, Ireland–Claisen rearrangement, TiCl4-assisted aldol followed by β-hydroxy elimination to construct C7–C8 olefin, and ring-closing metathesis as the key steps for achieving the target molecule
Scalable, Stereocontrolled, Total Synthesis of Carolacton
作者:Xiao-Ming Yu、Chuan-Cai Bian、Yong-Qiang Li、Hao-ran Yang
DOI:10.1055/a-2105-2774
日期:2023.10
A route for the scalable, stereocontrolled, total synthesis of carolacton is presented starting from commercially available S-Roche ester, d-ribose, and a known allylic alcohol. Key transformations in the total synthesis include a [3,3]-Claisen rearrangement, Sharpless asymmetric epoxidation–methyl ring-opening, or Leighton asymmetric crotylation, Evans aldol–reductive deoxygenation, and ring closing
作者:Michal S. Hallside、Richard S. Brzozowski、William M. Wuest、Andrew J. Phillips
DOI:10.1021/ol500004k
日期:2014.2.21
A synthesis of carolacton, a myxobacterial natural product that has profound effects on Streptococcus mutans biofilms, is reported. The synthesis proceeds via a longest linear sequence of 14 steps from an Evans beta-ketoimide and enabled preliminary evaluations of the effects of late-stage intermediates on S. mutans biofilms. These studies suggest that further investigations into carolacton's structure function relationships are warranted.