piperidines and acrylic-acid

Precious metals, in particular Pd, have a wide range of applications in industry. Due to their scarcity, precious metals have to be recycled, preferably with green and energy-saving recycling processes. In this article, palladium extraction from an aluminosilicate-supported catalyst, containing about 2 wt% (weight%) of Pd (100% PdO), with supercritical CO

Topics: Acrylates; Aluminum Silicates; Carbon Dioxide; Catalysis; Palladium; Piperidines; Polymers; Recycling; Styrene

A novel series of feruloyl-donepezil hybrid compounds were designed, synthesized and evaluated as multitarget drug candidates for the treatment of Alzheimer's Disease (AD). In vitro results revealed potent acetylcholinesterase (AChE) inhibitory activity for some of these compounds and all of them showed moderate antioxidant properties. Compounds 12a, 12b and 12c were the most potent AChE inhibitors, highlighting 12a with IC

Topics: Acrylates; Alzheimer Disease; Animals; Anti-Inflammatory Agents; Antioxidants; Cell Line; Cells, Cultured; Cholinesterase Inhibitors; Donepezil; Drug Design; Humans; Indans; Male; Mice; Molecular Docking Simulation; Molecular Targeted Therapy; Neurons; Neuroprotective Agents; Piperidines; Structure-Activity Relationship

Addition of 5-alkylaminopenta-2,4-dienals onto N-acyliminium ions, generated in situ from α-hydroxycarbamates derived from pyrrolidine or piperidine, in the presence of zinc triflate, followed by dehydrative cyclization, allowed the formation of pyridinium salts substituted at their 3-position by a five- or six-membered nitrogen heterocycle. Subsequent N-dealkylation of the pyridinium moiety and deprotection of the secondary amine or reduction of the carbamate function led to (±)-nicotine and analogs.

Topics: Acrylates; Alkylation; Amines; Imines; Ions; Molecular Structure; Nicotine; Piperidines; Pyridinium Compounds; Pyrrolidines

Topics: Acrylates; Central Nervous System Stimulants; Convulsants; Piperidines; Reserpine; Seizures