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14 results on '"Wei, Wan-Xing"'

5. Comparative analysis of essential oil compositions from Phyllanthus niriru, P. urinaria, and P. arenarius

Author

Lin Cuiwu, Li Xiangrong, and Wei Wan-xing

Subjects
Phyllanthus, biology, Traditional medicine, Carminative, Chemistry, Euphorbiaceae, Plant Science, General Chemistry, biology.organism_classification, General Biochemistry, Genetics and Molecular Biology, law.invention, Steam distillation, Terpene, law, medicine, Antispasmodic, Essential oil, Phyllanthus urinaria, medicine.drug
Abstract

Plants of the genus Phyllanthus (Euphorbiaceae) are widely distributed in most tropical and subtropical countries. They have been used as folk medicine in some countries for thousands of years in the treatment of many diseases, such as disturbances of the kidney and urinary bladder, intestinal infections, diabetes, and the hepatitis B virus [1, 2]. The water extract of Phyllanthus niriru Linn possesses many bioactivities such as stomachic, aperitive, antispasmodic, laxative, diuretic, and carminative properties, and against constipation, fever, malaria, hepatitis B, dysentery, gonorrhea, syphilis, tuberculosis, cough, diarrhea, and vaginitis [3-7]. Phyllanthus urinaria Linn (P. urinaria) is particularly used as a diuretic and for liver protection, diabetes, hepatitis, jaundice, dropsy, and dysentery [8-10]. The bioactivity and chemical composition of Phyllanthus arenarius beille have not yet been reported. All of these plants are distributed in Guangxi and other provinces in China [11]. In past decades, due to interest in the bioactivities of genus Phyllanthus, many investigations on the chemical composition of P. niriru and P. urinaria have been reported. Many compounds, such as flavonoids, lignans, alkaloids, and tannins, have been isolated from P. urinaria [12-14], and alkaloids, flavonoids, lignans, tannins, phenols, and terpenes from P. niriru [15-19]. The essential oil composition of the three plants has not been reported. We wish to report the composition of the essential oils from P. niriru, P. urinaria, and P. arenarius in this paper. The essential oils of these plants were extracted by steam distillation, and then their compositions were analyzed by gas chromatography-mass spectrometry. The composition of the essential oils from the three plants is shown in Table 1. Forty-three compounds were detected in the oil sample obtained from P. arenarius, 44 compounds from P. urinaria, and 50 from P. niruri.

Published
2008

6. Crystal structure of 4-hydroxynaphtho[2,3-b]benzofuran-6,11-dione, C16H8O4.

Author

Luo, Peng, Chittiboyina, Amar G., Pan, Wei-Gao, and Wei, Wan-Xing

Abstract

Copyright of Zeitschrift für Kristallographie / New Crystal Structures is the property of De Gruyter and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2020
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7. Crystal structure of 12-(2-hydroxybenzoyl)benzo[f]pyrido[1,2-a]indole-6,11-dione, C23H13NO4.

Author

Luo, Peng, Chittiboyina, Amar G., Wang, Mei, Khan, Ikhlas A., Pan, Wei-Gao, and Wei, Wan-Xing

Subjects
MONOCLINIC crystal system, ORTHORHOMBIC crystal system, CRYSTAL structure
Abstract

C23H13NO4, monoclinic, P21/n (no. 14), a = 11.6537(6) Å, b = 5.1315(2) Å, c = 26.8047(13) Å, β = 96.266(3)°, V = 1593.4(13) Å3, Z = 4, Rgt(F) = 0.0531, wRref(F2) = 0.1432, T = 90.0(5) K. [ABSTRACT FROM AUTHOR]

Published
2020
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12. Crystal structure of 12-(2-hydroxybenzoyl)benzo[f]pyrido[1,2-a]indole-6,11-dione, C23H13NO4.

Author

Luo, Peng, Chittiboyina, Amar G., Wang, Mei, Khan, Ikhlas A., Pan, Wei-Gao, and Wei, Wan-Xing

Subjects
*MONOCLINIC crystal system, *ORTHORHOMBIC crystal system, *CRYSTAL structure
Abstract

C23H13NO4, monoclinic, P21/n (no. 14), a = 11.6537(6) Å, b = 5.1315(2) Å, c = 26.8047(13) Å, β = 96.266(3)°, V = 1593.4(13) Å3, Z = 4, Rgt(F) = 0.0531, wRref(F2) = 0.1432, T = 90.0(5) K. [ABSTRACT FROM AUTHOR]

Published
2020
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13. [Design, virtual screening, synthesis and anti-hepatitis B virus of oxime derivatives].

Author

Cui XH, Tan J, Zhou M, Wei WX, Liu X, and Wang LS

Subjects
Ethers chemistry, Hepatitis B Surface Antigens metabolism, Hepatitis B e Antigens metabolism, Structure-Activity Relationship, Antiviral Agents chemistry, Drug Design, Hepatitis B virus drug effects, Oximes chemistry
Abstract

A series of new oxime and oxime ethers compounds were designed and virtually screened with target using the Molecular Operating Environment（MOE） software. Twelve unreported compounds including 4 oximes and 8 oxime ethers were synthesized with benzene, toluene, methoxybenzene and chlorobenzene as initial raw materials. Structures of compounds were elucidated by 1H NMR, 13C NMR and MS. The results of bioactive screening showed that a part of compounds displayed obviously anti-HBV activities. Inhibitory activities of compounds 4B-2 in secretion of HBsAg and HBeAg were IC50 HBsAg= 81.15 μmol·L-1, SIHBsAg = 9.20 and IC50 HBeAg = 90.66 μmol·L-1, SIHBeAg = 8.24, respectively. Preliminary structure-activity relationship study shows that methyl oxime ethers displayed better anti-HBV activities than the oximes.

Published
2016

14. Doxofyllinium tetra-chloridoanti-monate(III) monohydrate.

Author

Wei WX, Feng WJ, Zheng BJ, Chen Y, and Jin ZM

Abstract

The title compound, (C(11)H(14)N(4)O(4))[SbCl(4)]·H(2)O, comprises a protonated doxofyllinium cation [7-(1,3-dioxolan-2-ylmeth-yl)-1,3-dimethyl-2,6-dioxo-3,7-dihydro-1H-purin-9-ium], an [SbCl(4)](-) anion and a water mol-ecule linked by N-H⋯O and O-H⋯Cl hydrogen bonds: the [SbCl(4)](-) anions form centrosymmetric dimers via weak Sb⋯Cl inter-actions [Sb⋯Cl = 3.1159 (9) Å]. The geometrical arrangement in the crystal structure is characterized by slipped π-π stacking of the parallel purine ring systems, with an inter-planar separation of 3.32 Å.

Published
2007
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