Synthesis and antioxidant evaluation of novel silybin analogues. 2006

Leixiang Yang, and Jingxu Gong, and Feng Wang, and Yongmin Zhang, and Yanguang Wang, and Xiaojiang Hao, and Xiumei Wu, and Hua Bai, and Joachim Stöckigt, and Yu Zhao
Department of Traditional Chinese Medicine and Natural Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 353 Yan an Road, Hangzhou 310031, PR China.

In this work, we evaluated the antioxidant properties of the eight novel silybin analogues for their capacity to scavenge free radicals including superoxide anion radicals and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals in vitro. Compound 7d demonstrated an excellent antioxidant effect in scavenging superoxide anion free radical with an IC50 value of 26.5 microM, while the IC50 of quercetin (the reference compound) was 38.1 microM. Compounds 7b, 7e, 7h showed certain scavenging activities for both types of free radicals.

UI MeSH Term Description Entries
D008956 Models, Chemical Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment. Chemical Models,Chemical Model,Model, Chemical
D010851 Picrates Salts or esters of PICRIC ACID.
D011794 Quercetin A flavonol widely distributed in plants. It is an antioxidant, like many other phenolic heterocyclic compounds. Glycosylated forms include RUTIN and quercetrin. 3,3',4',5,7-Pentahydroxyflavone,Dikvertin
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D004353 Drug Evaluation, Preclinical Preclinical testing of drugs in experimental animals or in vitro for their biological and toxic effects and potential clinical applications. Drug Screening,Evaluation Studies, Drug, Pre-Clinical,Drug Evaluation Studies, Preclinical,Drug Evaluations, Preclinical,Evaluation Studies, Drug, Preclinical,Evaluation, Preclinical Drug,Evaluations, Preclinical Drug,Medicinal Plants Testing, Preclinical,Preclinical Drug Evaluation,Preclinical Drug Evaluations,Drug Screenings,Screening, Drug,Screenings, Drug
D006834 Hydrazines Substituted derivatives of hydrazine (formula H2N-NH2). Hydrazide
D000077385 Silybin The major active component of silymarin flavonoids extracted from seeds of the MILK THISTLE, Silybum marianum; it is used in the treatment of HEPATITIS; LIVER CIRRHOSIS; and CHEMICAL AND DRUG INDUCED LIVER INJURY, and has antineoplastic activity; silybins A and B are diastereomers. 2,3-Dehydrosilybin,Alepa-forte,Ardeyhepan,Cefasilymarin,Durasilymarin,Hepa-Merz Sil,Hepa-loges,HepaBesch,Hepar-Pasc,Heparsyx,Heplant,Lagosa,Legalon Forte,Silibin,Silibinin,Silibinin A,Silibinin B,Silybin A,Silybin B,Silybinin,2,3 Dehydrosilybin,Alepa forte,Hepa Merz Sil,Hepa loges,Hepar Pasc
D000838 Anions Negatively charged atoms, radicals or groups of atoms which travel to the anode or positive pole during electrolysis. Anion
D000975 Antioxidants Naturally occurring or synthetic substances that inhibit or retard oxidation reactions. They counteract the damaging effects of oxidation in animal tissues. Anti-Oxidant,Antioxidant,Antioxidant Activity,Endogenous Antioxidant,Endogenous Antioxidants,Anti-Oxidant Effect,Anti-Oxidant Effects,Anti-Oxidants,Antioxidant Effect,Antioxidant Effects,Activity, Antioxidant,Anti Oxidant,Anti Oxidant Effect,Anti Oxidant Effects,Anti Oxidants,Antioxidant, Endogenous,Antioxidants, Endogenous
D001713 Biphenyl Compounds Whitish aromatic crystalline organic compounds made up of two conjoined BENZENE rings. Compounds, Biphenyl

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