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Four new bi-phenylethylchromones from artificial agarwood. | LitMetric

Four new bi-phenylethylchromones from artificial agarwood.

Fitoterapia

Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China. Electronic address:

Published: July 2017

AI Article Synopsis

  • The structures of these compounds were confirmed through advanced techniques like NMR and HRESIMS, with their configurations analyzed via circular dichroism.
  • In tests for enzyme inhibition, compounds 2-4 showed a 10-45% inhibitory effect on acetylcholinesterase, but none were effective against α-glucosidase.

Article Abstract

Four new bi-phenylethylchromones (1-4) were isolated from the EtOAc extract of artificial agarwood induced by holing method originating from Aquilaria sinensis (Lour.) Gilg. The structures of new compounds were unambiguously elucidated by one- and two-dimensional NMR and HRESIMS measurements, and the absolute configuration was determined by analysis of circular dichroism (CD) spectra. All compounds were tested for acetylcholinesterase (AChE) inhibitory activity using modified Ellman's colorimetric method and α-glucosidase inhibitory activity using PNPG method. Compounds 2-4 exhibited different levels of inhibitory activity against AChE with the inhibition ratios in the range of 10-45%. However, none of the compounds was active against the α-glucosidase.

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Source
http://dx.doi.org/10.1016/j.fitote.2017.05.012DOI Listing

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