New multifunctional melatonin-derived benzylpyridinium bromides with potent cholinergic, antioxidant, and neuroprotective properties as innovative drugs for Alzheimer's disease
摘要:
A novel series of melatonin-derived benzylpyridinium bromides have been designed, synthesized, and evaluated as multi-functional anti-AD agents with cholinesterase inhibitory, antioxidant, and neuroprotective activities. In vitro studies showed that most of these compounds exhibited potent inhibitory activity toward h-AChE and h-BuChE, and good antioxidant capacity in the ORAC assay. In particular, compound 19 was the most attractive derivative, showing the highest potency to inhibit ChEs (AChE: IC50 = 0.11 mu M; BuChE: IC50 = 1.1 mu M) and good antioxidant ability (ORAC (trolox) = 3.41). Kinetic and molecular modeling studies indicated that 19 was a mixed-type inhibitor, binding simultaneously to active and peripheral sites of AChE. Moreover, 19 also showed good neuroprotective effects in human SH-SY5Y neuroblastoma cells. Taken together, these results suggested that compound 19 might be a promising multi-target drug candidate worthy of further pursuit. (C) 2015 Elsevier Masson SAS. All rights reserved.
Solid-Supported Chloro[1,3,5]triazine. A Versatile New Synthetic Auxiliary for the Synthesis of Amide Libraries
作者:Simonetta Masala、Maurizio Taddei
DOI:10.1021/ol990215h
日期:1999.11.1
[GRAPHICS]2,4,6-Trichloro[1,3,5]triazine was loaded on different types of NH2-functional resins to give a new supported reagent. The best results, in term of yields products, were obtained using the chlorotriazine linked to a polystyrene-poly(ethylene glycol) resin. This reagent was employed for the solution-phase synthesis of different amides and dipeptides.
31. N-oxides and related compounds. Part VII. Per-acid oxidation of some conjugated pyridines