Parasubindoles A-G, Seven Eremophilanyl Indoles from the Whole Plant of Parasenecio albus

J Org Chem. 2018 Oct 5;83(19):12122-12128. doi: 10.1021/acs.joc.8b02089. Epub 2018 Sep 18.

Abstract

Parasubindoles A-G (1-7), seven eremophilanyl indoles with an unprecedented 12 H-cyclopentane[ b]naphthalenespiro-1,3'-indole skeleton, were isolated from the whole plant of Parasenecio albus. Their structures with absolute configurations were elucidated by spectroscopic methods, single-crystal X-ray diffraction, and ECD analyses. Plausible biosynthetic pathways of 1-7 were postulated.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Asteraceae / chemistry*
  • Asteraceae / metabolism
  • Indoles / chemistry*
  • Indoles / metabolism
  • Models, Molecular
  • Molecular Conformation
  • Stereoisomerism

Substances

  • Indoles