Insight into tetrahydrofuran lignans from Isatis indigotica fortune with neuroprotective and acetylcholinesterase inhibitor activity

Phytochemistry. 2023 Apr:208:113609. doi: 10.1016/j.phytochem.2023.113609. Epub 2023 Feb 8.

Abstract

Nine tetrahydrofuran lignans, including three undescribed spiro-lignans, were isolated from Isatis indigotica Fortune (Brassicaceae). Extensive spectroscopic analyses achieved the structure elucidation of these tetrahydrofuran lignans, and quantum chemical calculation combined with the MAEΔΔδ parameter. Notably, isatispironeols A-B have a unique spiro[dienone-tetrahydrofuran] molecular core. These spiro[dienone-tetrahydrofuran] lignans showed comparable neuroprotective effects as the positive control in the H2O2-induced SH-SY5Y cells model. In addition, (-)-(7R,8S,1'R,7'R,8'R)-isatispironeol A possessed more significant AChE inhibitory activity, further interact sites were also predicted by the in silico assay.

Keywords: Acetylcholinesterase inhibitory; Brassicaceae; Isatis indigotica Fortune; MAE(ΔΔδ) parameter; Neuroprotective effects; Tetrahydrofuran lignans.

MeSH terms

  • Acetylcholinesterase
  • Cholinesterase Inhibitors
  • Furans / chemistry
  • Humans
  • Hydrogen Peroxide
  • Isatis* / chemistry
  • Lignans* / chemistry
  • Molecular Structure
  • Neuroblastoma*

Substances

  • Lignans
  • Acetylcholinesterase
  • Cholinesterase Inhibitors
  • Hydrogen Peroxide
  • Furans