Total synthesis of (-)-amathaspiramide F

Org Lett. 2008 Dec 4;10(23):5449-52. doi: 10.1021/ol802179e.

Abstract

The stereoselective total synthesis of the marine alkaloid (-)-amathaspiramide F (1) was achieved from the alpha-hydoxy-alpha-ethynylsilane 2. The crucial steps in this synthesis involved not only the enolate Claisen rearrangement of the alpha-acyloxy-alpha-alkenylsilane 6 for the construction of the nitrogen-containing quaternary carbon center, but also the chemoselective formation of the azaspirohemiaminal 12 using heptamethyldisilazane as the methylamine equivalent and the regioselective dibromination of the phenol moiety of 12 using n-Bu(4)NBrCl(2).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkenes / chemistry
  • Pyrrolidines / chemical synthesis*
  • Pyrrolidines / chemistry
  • Silanes / chemistry
  • Spiro Compounds / chemical synthesis*
  • Spiro Compounds / chemistry
  • Stereoisomerism

Substances

  • Alkenes
  • Pyrrolidines
  • Silanes
  • Spiro Compounds
  • amathaspiramide F