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- Title
Benzofuran Derivatives from Cortex Mori Radicis and Their Cholinesterase-Inhibitory Activity.
- Authors
Cui, Xiang; Huang, Zehong; Deng, Shanshan; Zhang, Yunxia; Li, Guoyin; Wang, Lining; Deng, Yanru; Wu, Changjing
- Abstract
The phytochemical investigation of Cortex Mori Radicis led to the isolation and identification of a new prenylated benzofuranone (1) and four ring-opening derivatives (2–5) named albaphenol A–E, as well as nigranol A (6), together with ten 2-arylbenzofuran derivatives (7–16). The characterization of the structures of the new compounds and the structural revision of nigranol A (6) were conducted using the comprehensive analysis of spectroscopic data (1D/2D NMR, HRESIMS, CD, and XRD). Compounds 1–16 were tested for their inhibitory effects on acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). Compounds 1 and 4 showed weak BChE-inhibitory activity (IC50 45.5 and 61.0 μM); six 2-arylbenzofuran derivatives showed more-potent BChE-inhibitory activity (IC50 2.5–32.8 μM) than the positive control galantamine (IC50 35.3 μM), while being inactive or weakly inhibitory toward AChE. Cathafuran C (14) exhibited the most potent and selective inhibitory activity against BChE in a competitive manner, with a Ki value of 1.7 μM. The structure–activity relationships of the benzofuran-type stilbenes were discussed. Furthermore, molecular docking and dynamic simulations were performed to clarify the interactions of the inhibitor–enzyme complex.
- Subjects
BENZOFURAN; BUTYRYLCHOLINESTERASE; STRUCTURE-activity relationships; X-ray diffraction; MOLECULAR docking; STILBENE derivatives; STILBENE
- Publication
Molecules, 2024, Vol 29, Issue 2, p315
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules29020315