Onosmanones A and B, two novel quinonoid xanthenes from Onosma paniculatum

Nat Prod Res. 2018 Nov;32(21):2571-2576. doi: 10.1080/14786419.2018.1428589. Epub 2018 Jan 23.

Abstract

Onosmanones A (1) and B (2), two novel quinonoid xanthenes with two geranyl groups, have been isolated from the whole plants of Onosma paniculatum. Their structures were elucidated on the basis of one- and two-dimensional NMR techniques.

Keywords: Boraginaceae; Onosma paniculatum; prenyl group; quinonoid xanthenes.

MeSH terms

  • Boraginaceae / chemistry*
  • China
  • Molecular Structure
  • Phytochemicals / isolation & purification
  • Xanthenes / chemistry*
  • Xanthenes / isolation & purification

Substances

  • Phytochemicals
  • Xanthenes
  • onosmanone A
  • onosmanone B