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A series of tacrine-phenol-bifendate hybrids (7a-7e, 8a-8e) were designed, synthesized and evaluated as inhibitors of cholinesterases (ChEs) with low hepatotoxicity. All the compounds had potent ChEs inhibitory activity with half-inhibitory concentration (IC50) values at the nanomolar range. Compound 8d exhibited the strongest inhibition to acetylcholinesterase (AChE) with an IC50 value of 156.39 nmol·L-1 and compound 7b showed the most potent inhibition for butyrylcholinesterase with IC50 value of 16.33 nmol·L-1. Kinetic and molecular modeling studies showed that 8d targeted both the catalytic active site and the peripheral anionic site of AChE. In addition, these compounds showed low toxicity to hepatocytes, and compound 8d did not increase the level of reactive oxygen species in HepG2 cells.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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