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LiBr as an Efficient Catalyst for One-pot Synthesis of Hantzsch 1,4-Dihydropyridines under Mild Conditions

Chinese Journal of Chemistry 2011年第1期29卷 118-122页

作者： Yadav, D. K. Patel, R. Srivastava, V. P. watal, g. Yadav, L. D. S. Alternative Therapeutics Unit Drug Development Division Medicinal Research Lab Department of Chemistry University of Allahabad Allahabad 211002 India g.een Synthesis Lab Department of Chemistry University ofAllahabad Allahabad 211002 India

A simple, inexpensive and efficient one-pot synthesis of 1,4-dihydropyridines has been accomplished via lithium bromide-catalyzed Hantzsch three-component condensation reaction of an aldehyde, α,β-ketoester and ammonium acetate in acetonitrile at room temperature in g.od to excellent yields. The present protocol is applicable to wide rang. of substrates including.aliphatic, aromatic and heterocyclic aldehydes affording.1,4-dihydropyridines.

关键词： Hantzsch reaction 1,4-dihydropyridines lithium bromide cyclization one-pot procedure multicomponent reactions

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Role of Moring. oleifera in reg.lation of diabetes-induced oxidative stress

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Asian Pacific Journal of Tropical Medicine 2013年第6期6卷 426-432页

作者： Dolly Jaiswal Prashant Kumar Rai Shikha Mehta Sanjukta Chatterji Surekha Shukla Devendra Kumar Rai g.urav Sharma Bechan Sharma Shahidul khair g.eta watal Alternative Therapeutics Unit Drug Development DivisionMedicinal Research Lab.Department of ChemistryUniversity of Allahabad Christopher Bond Life Sciences Center Department of Molecular Microbiology & ImmunologyUniversity of Missouri School of Medicine Department of NMR All India Institude of Medical Sciences Department of Biochemistry.University of Allahabad National Medicinal Plants Boord Alternative Therapeutics Unit Drug Development DivisionMedicinal Research Lab.Department of ChemistryUniversity of Allahahad

Objective:To evaluate the antioxidant activity of aqueous extract of Atoring. oleifeta ***) young.leaves by in vivo as well as in vitro ***:In vitro study included estimation of total phenolic,total ilavonol,total flavonoid and total antioxidant power(FRAP assay).Tn addition, in vivo study was done with the identified most effective dose of 200 nig.kg.of its lyophilized powder on normal and diabetic *** effect on different oxidative free radical scaveng.ng.enzymes,viz,superoxide dismutase(SOD),catalase(CAT),g.utathione-S-transferase(g.T),lipid peroxide(LPO) contents were ***:Sig.ificant increase in activities of ***, g.T while,a decrease in LPO content was ***,total phenolic,flavonoid and ilavonol contents in the extract were found to be 120 mg.g.of CAK,40.5 mg.g.of QEK and 12.12 mg.g.of QE,*** the other *** assay results of *** leaves was(85.00±5.00)μM of Fe^+/g.of extract ***:The sig.ificant antioxidant activities of *** leaves from both in vivo as well as in vitro studies sug.ests that the reg.lar intake of its leaves throug. diet can protect normal as well as diabetic patients ag.inst oxidative damag..

关键词： Moring. oleifera leaves Diabetes Free radical Oxidative damag. Scaveng.ng Antioxidant

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