Solid-phase organic synthesis of polyisoprenoid alcohols with traceless sulfone linker

J Org Chem. 2008 Sep 19;73(18):7197-203. doi: 10.1021/jo8010182. Epub 2008 Aug 16.

Abstract

Solid-phase organic synthesis of polyprenols with a traceless sulfone linker is described. The polymer-bound benezenesulfinate is first linked with the "tail" building blocks of isoprenyl chlorides via S-alkylation. With use of dimsyl anion as an appropriate base, the polymer-bound alpha-sulfonyl carbanion is generated and coupled with other "body" building blocks in an efficient manner. After repeated processes and a global palladium-catalyzed desulfonation with LiEt 3BH as the reducing agent, the desired polyprenols with various chain lengths and geometrical configurations are obtained in 32-59% overall yields. The solid-phase synthesis offers the advantage in facile isolation of polyprenols without tedious operation or time-consuming purification.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Hemiterpenes
  • Molecular Structure
  • Pentanols / chemical synthesis*
  • Pentanols / chemistry
  • Polymers / chemical synthesis*
  • Polymers / chemistry
  • Stereoisomerism
  • Sulfones / chemistry*

Substances

  • Hemiterpenes
  • Pentanols
  • Polymers
  • Sulfones
  • prenol