AChE inhibitory alkaloids from Coptis chinensis

Fitoterapia. 2020 Mar:141:104464. doi: 10.1016/j.fitote.2019.104464. Epub 2019 Dec 20.

Abstract

Coptis chinensis is a widely used traditional Chinese herbal medicine. In this work, 6 new alkaloids (coptisine A-F, 1-6) and 26 known alkaloids (7-32) were isolated from the chloroform extract of the rhizomes of C. chinensis. Compounds 1-3 are α-carbonylated benzylisoquinolines, and 4-6 are berberidic acid type alkaloids. Their structures were elucidated on the basis of extensive NMR and MS analyses. Seven compounds (7, 20, 22, 23, 25, 26, 29) exhibited significant AChE inhibitory activities at 10 μM (inhibition rates >80%).

Keywords: AChE; Alkaloids; Chinese herbal medicine; Coptis chinensis.

MeSH terms

  • Alkaloids / chemistry
  • Alkaloids / pharmacology*
  • Benzylisoquinolines / chemistry
  • Benzylisoquinolines / pharmacology*
  • Cholinesterase Inhibitors / chemistry
  • Cholinesterase Inhibitors / pharmacology*
  • Coptis / chemistry*
  • Molecular Structure
  • Rhizome / chemistry

Substances

  • Alkaloids
  • Benzylisoquinolines
  • Cholinesterase Inhibitors