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Antitussive, expectorant, and anti-inflammatory activities of four caffeoylquinic acids isolated from Tussilago farfara
- Qi-Zhen Wu, Dong‐Xia Zhao, J. Xiang, Mian Zhang, Chaofeng Zhang, Xiang-hong Xu
- MedicinePharmaceutical biology
- 1 July 2016
The caffeoylquinic acids and their mixture, exhibiting significant antitussive, expectorant, and anti-inflammatory effects, could be considered as the main effective ingredients of FTF, and they may act in a collective and synergistic way.
Simultaneous separation and determination of phenolic acids, pentapeptides, and triterpenoid saponins in the root of Aster tataricus by high-performance liquid chromatography coupled with…
- Dong‐Xia Zhao, Bingfeng Hu, Mian Zhang, Chaofeng Zhang, Xiang-hong Xu
- ChemistryJournal of separation science
- 1 February 2015
A reliable method was developed for the simultaneous quantification of 3-caffeoylquinic acid, 3,4-dicaffeoyLquinic Acid,3,5- dicaffeoyslquinIC acid, astin A,Astin B, astIn C, astersaponin A and astersapons C, and the qualified separations were achieved only on a C18 column packed with 2.7 μm particles.
Low-Temperature Structures of [py2H]+[Co(CO)4]− (py = Pyridine) and [(tmen)H]+[Co(CO)4]− (tmen = N,N,N',N'-Tetramethylethylenediamine)
The crystal structures of salts arising from the reaction of HCo(CO) 4 with pyridine and tetramethylethylenediamine, respectively, have been determined. The former, bis(pyridine) hydrogen…
An intrinsic criterion of defining ionic or covalent character of AB-type crystals based on the turning boundary radii calculated by an ab initio method
ABSTRACT Based on the concept of the intrinsic characteristic atomic and ionic radii and an ab initio study, we present a new criterion of defining ionic or covalent character of AB-type crystals,…
Band selection method for retrieving soil lead content with hyperspectral remote sensing data
Hyperspectral data offers a powerful tool for predicting soil heavy metal contamination due to its high spectral resolution and many continuous bands. However, band selection is the prerequisite to…
Syntheses and crystal structures of four 1-D or 2-D coordination polymers based on 1-((benzotriazol-1-yl)methyl)-1H-1,3-imidazole
Insight into markovnikov reactions of alkenes in terms of ab initio and molecular face theory.
- Zhong-Zhi Yang, Yan‐Li Ding, Dong‐Xia Zhao
- ChemistryChemphyschem : a European journal of chemical…
- 10 November 2008
Results indicate that not only regioselectivity, but also activation energy and reactivity correlate with the pi charge distribution in the initial state of the alkenes for electrophilic addition reactions.
Solubilities, Densities, and Refractive Indices in the Ternary Systems (LiBO2 + NaBO2 + H2O) and (LiBO2 + KBO2 + H2O) at 298.15 K and 0.1 MPa
- Shiqiang Wang, Juan Yang, Chu-li Shi, Dong‐Xia Zhao, Yafei Guo, T. Deng
- ChemistryJournal of Chemical & Engineering Data
- 26 June 2019
Solubilities, densities, and refractive indices of the two ternary systems (LiBO2 + NaBO2 + H2O) and (LiBO2 + KBO2 + H2O) at 298.15 K and 0.1 MPa were conducted with the method of isothermal solution…
Substitution reactions of diiron diselenolato complex with bisphosphine ligands
The relations of bond length and force constant with the potential acting on an electron in a molecule.
- Dong‐Xia Zhao, Li-Dong Gong, Zhong-Zhi Yang
- ChemistryThe journal of physical chemistry. A
- 14 October 2005
The formalism of the PAEM is first derived, and the calculated PAEMs are obtained by using the ab initio program based on the MELD program package for a series of diatomic halides, namely, HX, LiX, NaX, and X(2) molecules.