Triterpene hexahydroxydiphenoyl ester and phenol glucosides from the leaves of Castanopsis eyrie (Champ. ex Benth.) Hutch

Nat Prod Res. 2024 Apr;38(7):1177-1183. doi: 10.1080/14786419.2022.2135001. Epub 2022 Oct 22.

Abstract

As a part of our systematic study on Castanopsis genus (Fagaceae), one new triterpene hydrolysable tannin (1) and two new phenol glucosides (2 and 3) were isolated from the leaves of Castanopsis eyrei (Champ. ex Benth.) Hutch. Compound 1 was identified as a triterpene hexahydroxydiphenoyl (HHDP) ester. This type of compounds has only been isolated from Castanopsis genus. The structures of 1-3 were elucidated by the combination of spectroscopic analysis (MS, 1 D and 2 D NMR) and chemical evidence.

Keywords: Castanopsis eyrie; Fagaceae; phenol glucoside; triterpene HHDP esters.

MeSH terms

  • Esters / chemistry
  • Fagaceae* / chemistry
  • Glucosides / chemistry
  • Magnetic Resonance Spectroscopy
  • Phenol / analysis
  • Phenols / analysis
  • Plant Leaves / chemistry
  • Triterpenes* / chemistry

Substances

  • Glucosides
  • Phenol
  • Triterpenes
  • Esters
  • Phenols