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
提出了一种可扩展、立体控制、全合成 carolacton 的路线,从市售的S -Roche 酯开始,d-核糖和已知的烯丙醇。全合成中的关键转化包括[3,3]-Claisen重排、Sharpless不对称环氧化-甲基开环或Leighton不对称巴豆基化、Evans羟醛还原脱氧和闭环复分解(RCM)。carolacton 的全合成(分离出 151 mg,总收率 9.2%)通过 23 个线性步骤完成。另外,获得56mg carolacton C15-C16顺式烯烃异构体。