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Updated: Aug 22, 2025

Quantitative 31P NMR Analysis of Lignins and Tannins
Published on: August 2, 2021
Structurally diverse lignans from Solanum lyratum: chemical evidence for their acetylcholinease inhibitory activity
Xin Zhang1,2,3,4, Ming Bai1,2,3,4, Ye Chang1,2,3,4
1Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, Liaoning Province.
Abstract:
A chemical investigation of Solanum lyratum Thumb. (Solanace) afforded two new lignans (1b and 3) and eleven known lignan analogues (1a, 2a/2b and 4-11). Compounds 1a/1b and 2a/2b were separated as two pairs of enantiomers by chiral high-performance liquid chromatography (HPLC). Their structures were elucidated by detailed spectroscopic and comparative literature data analysis. The absolute configurations of compounds 1a/1b and 2a/2b were determined by comparing the experimental ECD data with the calculated values. All compounds were evaluated for their acetylcholinesterase (AChE) inhibitory activity. Notably, compared to the positive control, compounds 4 and 9 showed obvious AChE inhibition with their IC50 values of 1.30 ± 0.25 and 0.89 ± 0.04 μM, respectively. In addition, the possible interaction between acetylcholinesterase and the active compounds was also investigated by molecular docking.
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