Abstract
The multitarget-directed ligands demonstrating affinity to histamine H3 receptor and additional cholinesterase inhibitory potency represent a promising strategy for research into the effective treatment of Alzheimer’s disease. In this study, a novel series of benzophenone derivatives was designed and synthesized. Among these derivatives, we identified compound 6 with a high affinity for H3R (Ki = 8 nM) and significant inhibitory activity toward BuChE (IC50 = 172 nM and 1.16 µM for eqBuChE and hBuChE, respectively). Further in vitro studies revealed that compound 6 (4-fluorophenyl) (4-((5-(piperidin-1-yl)pentyl)oxy)phenyl)methanone) displays moderate metabolic stability in mouse liver microsomes, good permeability with a permeability coefficient value (Pe) of 6.3 × 10−6 cm/s, and its safety was confirmed in terms of hepatotoxicity in the HepG2 cell line. Therefore, we investigated the in vivo activity of compound 6 in the Passive Avoidance Test and the Formalin Test. While compound 6 did not show a statistically significant influence on memory and learning, it showed analgesic properties in both acute (ED50 = 20.9 mg/kg) and inflammatory (ED50 = 17.5 mg/kg) pain.
Original language | English |
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Article number | 238 |
Journal | Molecules |
Volume | 28 |
Issue number | 1 |
ISSN | 1420-3049 |
DOIs | |
Publication status | Published - 2023 |
Externally published | Yes |
Bibliographical note
Funding Information:This research was funded by the National Science Centre, Poland grant: No UMO-2016/23/B/NZ7/02327 (D.Ł.) (synthesis; H3R, ChE and MAO B in vitro studies; molecular modeling; in vivo studies) and Jagiellonian University Medical College in Kraków, grant no. N42/DBS/000300 (PAMPA assay, metabolic study).
Publisher Copyright:
© 2022 by the authors.
Keywords
- Alzheimer’s disease
- benzophenone derivatives
- cholinesterase inhibitors
- histamine H receptor ligands
- multitarget-directed ligands