Anti-inflammatory sesquiterpenoid dimers from Artemisia atrovirens

Fitoterapia. 2022 Jun:159:105199. doi: 10.1016/j.fitote.2022.105199. Epub 2022 Apr 20.

Abstract

Eight new sesquiterpenoid dimers, artatrovirenolides A-H (1-8), along with three known analogues (9-11), were isolated from Artemisia atrovirens by using the LC-MS guided isolation. Compound 1 was a compound dimerized from a guaianolide and a 1,10-seco-guaianolide unit while others were from two guaianolide units. Their structures were established by comprehensive analysis of spectroscopic data, and their absolute configurations were determined by the aid of time-dependent density functional theory electronic circular dichroism (TDDFT ECD) calculation. Compound 8 showed anti-inflammatory effect in LPS-stimulated BV-2 microglial cells at 1 μM, while compounds 1, 2, 5, and 6 inhibited microglial inflammation at 10 μM.

Keywords: Artatrovirenolides A-H; Artemisia atrovirens; Guaianolide; Sesquiterpenoid dimer; TDDFT ECD calculation.

MeSH terms

  • Anti-Inflammatory Agents / pharmacology
  • Artemisia* / chemistry
  • Microglia
  • Molecular Structure
  • Nitric Oxide
  • Sesquiterpenes* / chemistry
  • Sesquiterpenes* / pharmacology

Substances

  • Anti-Inflammatory Agents
  • Sesquiterpenes
  • Nitric Oxide