An efficient synthesis of the C1-C19 segment of carolacton is described, starting from D-ribose, (-)-beta-citronellene and a homopropargylic alcohol, and which employs a Nozaki-Hiyama-Kishi (NHK) coupling as the key step. Other important steps are cross-metathesis and Evans aldol reactions.
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