Bidysoxyphenols A-C, dimeric sesquiterpene phenols from the leaves of Dysoxylum parasiticum (Osbeck) Kosterm

Fitoterapia. 2022 Apr:158:105157. doi: 10.1016/j.fitote.2022.105157. Epub 2022 Feb 14.

Abstract

Three new sesquiterpene phenol dimers, bidysoxyphenols A-C (2-4), along with two known compounds, namely sesquiterpene phenol (1) and ionone derivatives (5), were isolated from the leaves of Dysoxylum parasiticum (Osbeck) Kosterm. The structures of these new compounds, including their absolute configurations, were elucidated by nuclear magnetic resonance spectroscopy, ultraviolet spectroscopy, infrared spectroscopy, high-resolution electrospray ionization time-of-flight mass spectrometry, and electronic circular dichroism. Compounds 1 and 2 showed cytotoxicity against human promyelocytic leukemia cells, with IC50 values of 18.25 ± 1.52 and 39.04 ± 3.12 μM, respectively.

Keywords: Cytotoxicity; Dysoxylum parasiticum; HL60 cells; Meliaceae; Sesquiterpene phenol dimers.

MeSH terms

  • Humans
  • Meliaceae* / chemistry
  • Molecular Structure
  • Phenols / analysis
  • Plant Leaves / chemistry
  • Sesquiterpenes* / chemistry

Substances

  • Phenols
  • Sesquiterpenes