Total synthesis of the 7,3'-linked naphthylisoquinoline alkaloid ancistrocladidine

J Org Chem. 2006 Sep 15;71(19):7354-63. doi: 10.1021/jo0611364.

Abstract

The first total synthesis of ancistrocladidine, a rare 7,3'-linked naphthylisoquinoline alkaloid, has been completed, with the key feature of the synthesis being the formation of the extremely hindered biaryl linkage by ortho-arylation of a naphthol with an aryllead triacetate. Initial efforts were focused on the generation of a heteroaryl lead species, which would have allowed a convergent synthesis to be developed. However, it was not possible to generate such a lead species. A simpler aryl lead triacetate was prepared and reacted. The resulting biaryl aldehyde was elaborated in 10 steps to form a 1:1 mixture of ancistrocladidine and its atropisomer. Recrystallization of the mixture afforded ancistrocladidine, which was identical in all respects to the reported data.

MeSH terms

  • Alkaloids / chemical synthesis*
  • Alkaloids / chemistry
  • Isomerism
  • Isoquinolines / chemical synthesis*
  • Isoquinolines / chemistry
  • Molecular Structure
  • Naphthols / chemical synthesis*
  • Naphthols / chemistry

Substances

  • Alkaloids
  • Isoquinolines
  • Naphthols
  • ancistrocladidine