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20 results on '"Li, Zhan"'

1. ChemInform Abstract: ent-Abietane-Type Diterpenoids from the Roots of Euphorbia ebracteolata with Their Inhibitory Activities on LPS-Induced NO Production in RAW 264.7 Macrophages.

Author

Liu, Zhi‐guo, Li, Zhan‐lin, Li, Da‐hong, Li, Ning, Bai, Jiao, Zhao, Feng, Meng, Da‐li, and Hua, Hui‐ming

Subjects
*DITERPENES, *EUPHORBIA, *MACROPHAGES
Abstract

Four new ent-abietane diterpenoids, ebractenoids K-N, are isolated along with six known ones from the roots of Euphorbia ebracteolata. [ABSTRACT FROM AUTHOR]

Published
2016
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3. ChemInform Abstract: Sequential One-Pot Rh(III)-Catalyzed Direct C2 and C7 Alkylation of (Hetero)aromatic C-H Bonds of Indoles.

Author

Wang, Liang, Li, Zhan, Qu, Xing, Peng, Wang‐Ming, Hu, Si‐Qian, and Wang, Hong‐Bo

Subjects
*INDOLE derivatives, *RHODIUM catalysts, *CHEMICAL derivatives
Abstract

An abstract of the article "Sequential one-pot rhodium(III)-catalyzed direct C2 and C7 alkylation of hetero-aromatic carbon-hydrogen bonds of indoles," by L. Wang, Z. Li, X. Qu, W.-M. Peng, S.-Q. Hu and H.B. Wang is presented.

Published
2016
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4. ChemInform Abstract: Highly Efficient Synthesis of Arylpyrrole Derivatives via Rh(III)-Catalyzed Direct C-H Arylation with Aryl Boronic Acids.

Author

Wang, Liang, Li, Zhan, Qu, Xing, and Peng, Wangming

Subjects
*PYRROLE derivatives, *ARYLATION
Abstract

The article presents chemical equations related to article "Highly Efficient Synthesis of Arylpyrrole Derivatives via Rh(III)-Catalyzed Direct C-H Arylation with Aryl Boronic Acids.." by L. Wang, and others published in "Chinese Journal of Chemistry" in 2015.

Published
2016
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5. ChemInform Abstract: Photoinduced and N-Bromosuccinimide-Mediated Cyclization of 2-Azido-N-phenylacetamides.

Author

Li, Zhan‐Shan, Wang, Wei‐Xia, Yang, Ji‐Dong, Wu, Yue‐Wei, and Zhang, Wei

Subjects
*PHOTOCHEMISTRY, *BROMOSUCCINIMIDE, *RING formation (Chemistry), *ACETAMIDE, *PYRAZINE derivatives, *FREE radical reactions
Abstract

A synthesis of quinoxalin-2-ones or heterocyclic spiro compounds is developed using NBS-promoted reactions of 2-azido-N-phenylacetamides under visible light irradiation. [ABSTRACT FROM AUTHOR]

Published
2013
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10. ChemInform Abstract: Rhodium-Catalyzed Regioselective Direct C-H Arylation of Indoles with Aryl Boronic Acids.

Author

Wang, Liang, Qu, Xing, Li, Zhan, and Peng, Wang‐Ming

Subjects
*RHODIUM catalysts, *REGIOSELECTIVITY (Chemistry), *CARBON-hydrogen bonds, *ARYLATION, *INDOLE compounds, *BORONIC acids
Abstract

The arylation of indoles (I) and related substrates provides the corresponding 3-substituted products in excellent yields and this reaction is compatible to a wide range of functionalized groups. [ABSTRACT FROM AUTHOR]

Published
2015
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13. ChemInform Abstract: Racemic Alkaloids from Macleaya cordata: Structural Elucidation, Chiral Resolution, and Cytotoxic, Antibacterial Activities.

Author

Sai, Chun‐Mei, Li, Da‐Hong, Li, Sheng‐Ge, Han, Tong, Guo, Yong‐Zhi, Pei, Yue‐Hu, Bai, Jiao, Jing, Yong‐Kui, Li, Zhan‐Lin, and Hua, Hui‐Ming

Subjects
*RACEMIC mixtures, *RESOLUTION (Chemistry), *ANTINEOPLASTIC antibiotics, *ANTIBACTERIAL agents, *HIGH performance liquid chromatography, *ENANTIOMERS
Abstract

Macleayins C-E are isolated as racemic mixtures and separated by chiral-phase HPLC to give the pure enantiomers. [ABSTRACT FROM AUTHOR]

Published
2016
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17. ChemInform Abstract: N-Bromosuccinimide-Mediated Radical Cyclization of 3-Arylallyl Azides: Synthesis of 3-Substituted Quinolines.

Author

Wang, Wei‐Xia, Zhang, Qing‐Zhao, Zhang, Tian‐Qi, Li, Zhan‐Shan, Zhang, Wei, and Yu, Wei

Subjects
*QUINOLINE derivatives, *BROMOSUCCINIMIDE, *RING formation (Chemistry), *AZIDES, *AROMATIC compound synthesis, *VISIBLE spectra
Abstract

Under visible light irradiation of N-bromosuccinimide methyl 2-(azidomethyl)-3-aryl-propenoates and -acrylonitriles convert to the corresponding iminyl radicals which undergo intramolecular ortho attack on the aryl ring, affording methyl quinoline-3-carboxylates and 3-carbonitriles, respectively. [ABSTRACT FROM AUTHOR]

Published
2015
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18. ChemInform Abstract: Pegaharmalines A (I) and B (II), Two Novel β-Carboline Alkaloids with Unprecedented Carbon Skeletons from Peganum harmala.

Author

Wang, Kai‐Bo, Yuan, Chun‐Mao, Xue, Chun‐Mei, Li, Da‐Hong, Jing, Yong‐Kui, He, Hong‐Ping, Hao, Xiao‐Jiang, Di, Ying‐Tong, Li, Zhan‐Lin, and Hua, Hui‐Ming

Subjects
*PEGANUM, *CANCER cells, *ZYGOPHYLLACEAE, *ALKALOIDS, *CELL-mediated cytotoxicity
Abstract

The title compounds are screened for their activity against five human cancer cell lines and show significant cytotoxicity against HL-60 cells with IC50 values of 9.4 and 13.6 μM, respectively. [ABSTRACT FROM AUTHOR]

Published
2015
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