5-Aryl-imidazolin-2-ones as a scaffold for potent antioxidant and memory-improving activity
摘要:
A series of 5-phenyl-substituted-N-alkyl-imidazolin-2-ones with potent radical-scavenging activity and lipid peroxidation inhibitory activity was synthesized. Many of the compounds showed memory-improving effect in animal models independent of the inhibitory activity on lipid peroxidation. (c) 2008 Elsevier Ltd. All rights reserved.
NOVEL ANTIBACTERIAL AGENTS FOR THE TREATMENT OF GRAM POSITIVE INFECTIONS
申请人:MetCalf, III Chester A.
公开号:US20100184649A1
公开(公告)日:2010-07-22
The present invention relates to novel lipopeptide compounds, pharmaceutical compositions of these compounds and methods of using these compounds as antibacterial compounds. The compounds of the invention are particularly useful against a variety of bacteria, including resistant strains. The compounds are useful as antibacterial agents against
Clostridium difficile.
Catalytic Friedel–Crafts Acylation of Alkoxybenzenes Mediated by Aluminum Hydrogensulfate in Solution and Solvent-Free Conditions
作者:Peyman Salehi、Mohammad Mehdi Khodaei、Mohammad Ali Zolfigol、Sara Sirouszadeh
DOI:10.1246/bcsj.76.1863
日期:2003.9
Friedel–Crafts acylation of alkoxybenzenes was achieved efficiently by a reaction with aliphatic acid anhydrides in the presence of catalytic amounts of aluminum hydrogensulfate, Al(HSO4)3, in nitromethane and under solvent-free conditions. Alkylbenzenes and aryl halides, as well as aromatic anhydrides, remained intact under these conditions.
Catalytic Friedel–Crafts Acylation of Alkoxy Benzenes by Ferric Hydrogensulfate
作者:Peyman Salehi、Mohammad Mahdi Khodaei、Mohammad Ali Zolfigol、Shahpour Zeinoldini
DOI:10.1081/scc-120018697
日期:2003.1.5
Abstract Friedel–Crafts acylation of alkoxy benzenes is achieved efficiently by reaction with aliphatic acid anhydrides in the presence of catalytic amounts of ferric hydrogensulfate, Fe(HSO4)3, in nitromethane. Alkyl benzenes and aryl halides, as well as aromatic anhydrides, remain intact under these conditions.
Preparation of highly enantiomerically pure linear secondary alcohols via asymmetric reduction of prochiral ketones with borane
作者:Jiaxi Xu、Xianbin Su、Qihan Zhang
DOI:10.1016/s0957-4166(03)00373-2
日期:2003.7
alcohols, via the asymmetricoxazaborolidine-catalyzedboranereduction of prochiral ketones is described. The phenomenon of the enantioselectivity of 1-(4-alkoxylphenyl) alcohols lower than that of 1-(4-alkylphenyl) alcohols was found and rationalized to the coordination of the oxygen atom in the alkoxy groups to the catalyst and borane. Based on the rationale, the enantioselectivity of 1-(4-alkoxylphenyl)
Effect of Temperature on the Enantioselectivity in the Oxazaborolidine-Catalyzed Asymmetric Reduction of Ketones. Noncatalytic Borane Reduction, a Nonneglectable Factor in the Reduction System
作者:Xu、Wei、Zhang
DOI:10.1021/jo035203v
日期:2003.12.1
The effect of temperature on the enantioselectivity of the oxazaborolidine-catalyzedasymmetricboranereduction of ketones has been investigated carefully using alkyl aryl ketones with a variety of functional groups and a B-methoxyoxazaborolidine derived from trimethyl borate and (S)-alpha,alpha-diphenylprolinol as a catalyst. The reductions were carried out over a range of temperatures in THF and