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Synthesis, In Vitro Biological Evaluation and Molecular Modeling of Benzimidazole-Based Pyrrole/Piperidine Hybrids Derivatives as Potential Anti-Alzheimer Agents
oleh: Sundas Tariq, Fazal Rahim, Hayat Ullah, Maliha Sarfraz, Rafaqat Hussain, Shoaib Khan, Misbah Ullah Khan, Wajid Rehman, Amjad Hussain, Mashooq Ahmad Bhat, Muhammad Kamran Farooqi, Syed Adnan Ali Shah, Naveed Iqbal
Format: | Article |
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Diterbitkan: | MDPI AG 2024-03-01 |
Deskripsi
Benzimidazole-based pyrrole/piperidine analogs (<b>1</b>–<b>26</b>) were synthesized and then screened for their acetylcholinesterase and butyrylcholinesterase activities. All the analogs showed good to moderate cholinesterase activities. Synthesized compounds (<b>1</b>–<b>13</b>) were screened in cholinesterase enzyme inhibition assays and showed AChE activities in the range of IC<sub>50</sub> = 19.44 ± 0.60 µM to 36.05 ± 0.4 µM against allanzanthane (IC<sub>50</sub> = 16.11 ± 0.33 µM) and galantamine (IC<sub>50</sub> = 19.34 ± 0.62 µM) and varied BuChE inhibitory activities, with IC<sub>50</sub> values in the range of 21.57 ± 0.61 µM to 39.55 ± 0.03 µM as compared with standard allanzanthane (IC<sub>50</sub> = 18.14 ± 0.05 µM) and galantamine (IC<sub>50</sub> = 21.45 ± 0.21 µM). Similarly, synthesized compounds (<b>14</b>–<b>26</b>) were also subjected to tests to determine their in vitro AChE inhibitory activities, and the results obtained corroborated that all the compounds showed varied activities in the range of IC<sub>50</sub> = 22.07 ± 0.13 to 42.01 ± 0.02 µM as compared to allanzanthane (IC<sub>50</sub> = 20.01 ± 0.12 µM) and galantamine (IC<sub>50</sub> = 18.05 ± 0.31 µM) and varied BuChE inhibitory activities, with IC<sub>50</sub> values in the range of 26.32 ± 0.13 to 47.03 ± 0.15 µM as compared to standard allanzanthane (IC<sub>50</sub> = 18.14 ± 0.05 µM) and galantamine (IC<sub>50</sub> = 21.45 ± 0.21 µM). Binding interactions of the most potent analogs were confirmed through molecular docking studies. The active analogs <b>2</b>, <b>4</b>, <b>10</b> and <b>13</b> established numerous interactions with the active sites of targeted enzymes, with docking scores of −10.50, −9.3, −7.73 and −7.8 for AChE and −8.97, −8.2, −8.20 and −7.6 for BuChE, respectively.