Results 181 to 190 of about 8,220 (213)

Antiviral benzofurans from Eupatorium chinense

Phytochemistry, 2016
Eleven benzofuran dimers, (+)-dieupachinins A-E, (-)-dieupachinins A-E and dieupachinin F, a benzofuran trimer trieupachinin A, as well as seven known compounds were isolated from the roots of Eupatorium chinense. The enantiomers of racemates dieupachinins A-E were separated by chiral HPLC. The structures with absolute configurations were elucidated on
Wen-Jing, Wang, Lei, Wang, Zhong, Liu, Ren-Wang, Jiang, Zhi-Wen, Liu, Man-Mei, Li, Qing-Wen, Zhang, Yi, Dai, Yao-Lan, Li, Xiao-Qi, Zhang, Wen-Cai, Ye   +10 more
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Bioactive Benzofuran derivatives: A review

European Journal of Medicinal Chemistry, 2015
In nature's collection of biologically active heterocycles, benzofuran derivatives constitute a major group. The broad spectrum of pharmacological activity in individual benzofurans indicates that this series of compounds is of an undoubted interest.
Hena, Khanam, , Shamsuzzaman
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Benzofuran derivatives: a patent review

Expert Opinion on Therapeutic Patents, 2013
Benzofuran moiety constitutes the core of several interesting pharmacologically active natural products. Benzofurans are among feasible potent active inhibitors against many diseases, viruses, microbes, fungus and enzymes. Several series of therapeutically important synthetic and naturally occurring benzofuran-containing compounds are reported in this ...
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Ionic hydrogenation of benzofurans

Chemistry of Heterocyclic Compounds, 1975
Benzofurans are arranged in the order 2-methylbenzofuran > 3-methylbenzofuran > benzofuran with respect to the case with which they undergo ionic hydrogenation. Benzofuran and 2-methylbenzofuran are protonated in the 3 position of the heterocyclic ring, whereas 3-methylbenzofuran is protonated in the 2 position.
�. A. Karakhanov, E. A. Dem'yanova, E. G. Shkarin, E. A. Viktorova   +3 more
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Catalytic transformations of benzofuran

Chemistry of Heterocyclic Compounds, 1974
When benzofuran is alkylated with tert-butyl chloride in the vapor phase (190–260‡C) in a flow system, the ratio of the 2- and 3-tert-butylbenzofurans formed varies from 2∶1 to 20∶1, depending on the acidity of the catalyst used (ZnCl2/Al2O3), because of conversion of the 3-isomer to the 2-isomer.
�. A. Karakhanov, G. V. Drovyannikova, E. A. Viktorova   +2 more
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Benzofurans from 2-ethylphenols

Journal of Catalysis, 1969
Abstract Substituted 2-ethylphenols when heated at or above 550 °C produce substituted benzofurans along with other products. 4-Methyl-, 4-ethyl-, 4,5-dimethyl, 4-fluoro-, 6-fluoro-, 4-chloro-, 6-chloro-, 4,6-dichloro-, and 4-bromo-2-ethylphenols gave the appropriately substituted benzofurans.
Edwin N. Givens, Paul B. Venuto
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Reactivity of Benzofuran Derivatives

Synthetic Communications, 2014
Abstract This review presents a systematic and comprehensive survey of the chemical reactivity of benzofurans. These compounds are important intermediates for the synthesis of a variety of useful and novel heterocyclic systems that are otherwise difficult to obtain synthetically.
Ameen A. Abu-Hashem, Hoda A. R. Hussein, Ahmed S. Aly, Moustafa A. Gouda   +3 more
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Furans and Benzofurans

2012
This chapter reviews the significant developments in the metalation of furans and benzofurans and applications of the resulting metalated species in the past decade. New and interesting metalated furan and benzofuran derivatives and their novel reactions are featured.
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Benzofuran derivatives

Chemistry of Heterocyclic Compounds, 1973
E. A. Titov, A. S. Grishchenko, L. A. Gura, A. N. Kost   +3 more
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Fluorinated Furans and Benzofurans

2014
Synthesis, reactions, and application of furans and benzofurans bearing a fluorine atom and a trifluoromethyl group are reviewed.
Alexander V. Butin, Igor V. Trushkov, Olga V. Serdyuk, Vladimir T. Abaev   +3 more
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