- Design, synthesis and biological evaluation of novel naturally-inspired multifunctional molecules for the management of Alzheimer's disease
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In our overall goal to overcome the limitations associated with natural products for the management of Alzheimer's disease and to develop in-vivo active multifunctional cholinergic inhibitors, we embarked on the development of ferulic acid analogs. A systematic SAR study to improve upon the cholinesterase inhibition of ferulic acid with analogs that also had lower logP was carried out. Enzyme inhibition and kinetic studies identified compound 7a as a lead molecule with preferential acetylcholinesterase inhibition (AChE IC50 = 5.74 ± 0.13 μM; BChE IC50 = 14.05 ± 0.10 μM) compared to the parent molecule ferulic acid (% inhibition of AChE and BChE at 20 μM, 15.19 ± 0.59 and 19.73 ± 0.91, respectively). Molecular docking and dynamics studies revealed that 7a fits well into the active sites of AChE and BChE, forming stable and strong interactions with key residues Asp74, Trp286, and Tyr337 in AChE and with Tyr128, Trp231, Leu286, Ala328, Phe329, and Tyr341 in BChE. Compound 7a was found to be an efficacious antioxidant in a DPPH assay (IC50 = 57.35 ± 0.27 μM), and it also was able to chelate iron. Data from atomic force microscopy images demonstrated that 7a was able to modulate aggregation of amyloid β1-42. Upon oral administration, 7a exhibited promising in-vivo activity in the scopolamine-induced AD animal model and was able to improve spatial memory in cognitive deficit mice in the Y-maze model. Analog 7a could effectively reverse the increased levels of AChE and BChE in scopolamine-treated animals and exhibited potent ex-vivo antioxidant properties. These findings suggest that 7a can act as a lead molecule for the development of naturally-inspired multifunctional molecules for the management of Alzheimer's and other neurodegenerative disorders.
- Chittiboyina, Amar G.,Doerksen, Robert J.,Modi, Gyan,Nayak, Prasanta Kumar,Pandey, Amruta,Pandey, Pankaj,Priya, Khushbu,Rai, Geeta,Shankar, Gauri,Singh, Yash Pal,Tej, Gullanki Naga Venkata Charan,Vishwakarma, Swati
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- Camptothecins in tumor homing via an RGD sequence mimetic
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A RGD peptide mimetic was conjugated to four camptothecins, with the purpose to improve their therapeutic index. The conjugate derivatives were evaluated against two tumor cell lines, one overexpressing integrins (human ovarian carcinoma, A2780) and a sec
- Alloatti, Domenico,Giannini, Giuseppe,Vesci, Loredana,Castorina, Massimo,Pisano, Claudio,Badaloni, Elena,Cabri, Walter
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supporting information
p. 6509 - 6512
(2012/11/07)
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- Benzimidazole derivatives and their use for modulating the gaba-alpha receptor complex
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This invention relates to novel benzimidazole derivatives, pharmaceutical compositions containing these compounds, and methods of treatment therewith. The compounds of the invention are useful in the treatment of central nervous system diseases and disord
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Page/Page column 6-7
(2009/04/24)
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- ARYL-SUBSTITUTED ALICYCLIC COMPOUND AND MEDICAL COMPOSITION COMPRISING THE SAME
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An aryl-substituted alicyclic compound of the formula (I): wherein U is 1,4,5,6-tetrahydropyrimidin-2-yl, etc., A is phenylene, etc., B is piperidine-1,4-diyl, etc., Z is -CONH-, etc., R3 is hydrogen, etc., R5 is hydrogen, aryl, etc.
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- New 3-[4-(3-substituted phenyl)piperazin-1-yl]-1-(benzo[b]thiophen-3-yl)-propanol derivatives with dual action at 5-HT1A serotonin receptors and serotonin transporter as a new class of antidepressants
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In this paper a series of new 3-[4-(3-substituted phenyl)piperazin-1-yl]-1-(benzo[b]thiophen-3-yl)propanol derivatives is presented as a new class of antidepressant drugs with dual activity at 5-HT1A serotonin receptors and serotonin transporte
- Orus,Martinez,Perez,Oficialdegui,Del Castillo,Mourelle,Lasheras,Del Rio,Monge, Antonio
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p. 515 - 518
(2007/10/03)
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