2-(Arylmethyl)-3-substituted quinuclidines as selective α7 nicotinic receptor ligands
摘要:
A series of 2-(arylmethyl)-3-substituted quinuclidines was developed as alpha 7 neuronal nicotinic acetylcholine receptor (nAChR) agonists based on a putative pharmacophore model. The series is highly selective for the alpha 7 over other nAChRs (e.g., the alpha A beta 2 of the CNS, and the muscle and ganglionic subtypes) and is functionally tunable at alpha 7. One member of the series, (+)-N-(1-azabicyclo[2.2.2]oct-3-yl)benzo[b]furan-2-carboxamide (+)-81), has potent agonistic activity for the alpha 7 nAChR (EC50 = 33 nM, I-max = 1.0), at concentrations below those that result in desensitization. (c) 2005 Elsevier Ltd. All rights reserved.
Novel 2-(substituted benzyl)quinuclidines inhibit human α7 and α4β2 nicotinic receptors by different mechanisms
作者:Hugo R. Arias、Jhon J. López、Dominik Feuerbach、Angélica Fierro、Marcelo O. Ortells、Edwin G. Pérez
DOI:10.1016/j.biocel.2013.08.003
日期:2013.11
indicate that the methiodides present the highest affinities for the hα7 nAChR agonist sites, while the same compounds bind preferably to the hα4β2 nAChR ion channel domain. These results indicate that the methiodides are competitive antagonists of the hα7 nAChR but noncompetitive antagonists of the hα4β2 subtype. Docking and molecular dynamics simulations showed that the methiodide derivative 8d binds
A method for the enantioselectivesynthesis of cis-3-quinuclidinols by Ru-catalyzed asymmetrictransferhydrogenation via dynamic kinetic resolution is described. The reaction proceeded under mild conditions using ammonium formate as the hydrogen donor, affording the products in high yields (up to 99%) with excellent diastereoselectivity (up to 99:1 dr) and enantioselectivity (95–99% ee). This protocol
Synthesis, structure, and properties of pyrazolo[4,3-b]quinuclidine derivatives
作者:K. F. Turchin、A. D. Yanina、T. Ya. Filipenko、E. E. Mikhlina、Yu. N. Sheinker、L. N. Yakhontov
DOI:10.1007/bf00515032
日期:1985.9
COMPOSITION COMPRISING A UV-SCREENING AGENT, AN ANIONIC CROSSLINKED HYDROPHILIC POLYMER, A SURFACTANT HAVING AN HLB LESS THAN OR EQUAL TO 5 AND A SILICONE COPOLYMER
申请人:L'Oreal
公开号:US20210346249A1
公开(公告)日:2021-11-11
The present invention relates to a composition in the form of an oil-in-water emulsion comprising one or more UV-screening agents, one or more anionic crosslinked hydrophilic polymers, one or more surfactants having an HLB less than or equal to 5 and one or more specific silicone copolymers. The present invention also relates to a cosmetic method for treating the skin against UV radiation using said composition.