Ursane and 24-Noroleanane-Type Triterpenoids with Anti-HIV Activity from the Twigs and Leaves of Antirhea chinensis

Chem Biodivers. 2022 Oct;19(10):e202200716. doi: 10.1002/cbdv.202200716. Epub 2022 Sep 16.

Abstract

Investigations on the twigs and leaves of Antirhea chinensis have led to the discovery of two undescribed pentacyclic triterpenoids (1 and 2) and nine known analogs. Compounds 1 and 2, each assigned as the ursane and 24-noroleanane-type triterpenoids, featuring similar oxidation pattern of 3β,6β,19α-trihydroxy-28-carboxyl. Their structures were elucidated via comprehensive analyses of spectroscopic data. Compound 1 displayed potent anti-HIV activity (EC50 =1.24 μM) and high selectivity index (SI >32.3).

Keywords: 24-noroleanane triterpenoid; Antirhea chinensis; anti-HIV activity; ursane triterpenoid.

MeSH terms

  • Molecular Structure
  • Plant Extracts / chemistry
  • Plant Leaves / chemistry
  • Rubiaceae*
  • Triterpenes* / chemistry

Substances

  • ursane
  • Triterpenes
  • Plant Extracts