Hengshan Wang

Yingming Pan4
Xianghui Yi2
Ye Zhang2
4Yingming Pan
2Xianghui Yi
2Ye Zhang
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Complexes of copper (II) with hesperetin, naringenin, and apigenin of general composition [CuL(2)(H(2)O)(2)] nH(2)O (1-3) have been synthesized and characterized by elemental analysis, UV-Vis, FT-IR, ESI-MS, and TG-DTG thermal analysis. The free ligands and the metal complexes have been tested in vitro against human cancer cell lines hepatocellular(More)
In this study, chemical composition and antioxidant properties of Ocimum gratissimum (Og) were investigated. Leaves of Og were extracted using ethanol to obtain an ethanolic crude extract (ECE), and then ECE was sequentially partitioned with petroleum ether, ethyl acetate, n-butanol, and deionized water to give the corresponding petroleum ether fraction,(More)
Several hydroxyl Schiff base (HSB) compounds (1–10) with good radical scavenging activity (RSA) were designed. Compounds 6, 7, and 10 showed better RSAs than the common synthetic antioxidant 2,6-diter-butyl-4-methylphenol (BHT) in DPPH• and ABTS• assays. To probe whether these HSB compounds may exert their antioxidant effect through transition metal ion(More)
In this paper, a new econometric model of volatility is proposed using hybrid Support Vector machine for Regression (SVR) combined with Chaotic Genetic Algorithm (CGA) to fit conditional mean and then conditional variance of stock market returns. The CGA, integrated by chaotic optimization algorithm with Genetic Algorithm (GA), is used to overcome premature(More)
BACKGROUND Alzheimer's disease (AD), a progressive and degenerative disorder, has become one of the severe problems among the aged population all over the world. To use cholinesterase inhibitor drugs has become the most predominant treatment strategy for AD. RESULTS A series of novel 1, 3-dihydroxyxanthone Mannich bases derivatives (1a ~ 4e) were(More)
Starting from dehydrobaietic acid with the analogous structure of carnosic acid, the intermediate methyl 12-bromo-13-nitro-7-oxo dehydrodeisopropylabietate was synthesized through methylation, bromination, carbonylation, and nitration. Subsequently, the coupling of methyl 12-bromo-13-nitro-7-oxo dehydrodeisopropylabietate with aliphatic or aromatic primary(More)
To integrate models and improve models collaboration, an ontology-based program-logic-combined (PLC) model representation is proposed, which is easily-implemented, reasoning-supported, has high openness and extensibility. Take the TV ontology as an example, OWL is used to describe the semantics of parameters. Based on this semantic match, model integration(More)
Naturally occurring dimeric 1,4-benzoquinone derivatives, belamcandaquinones F, G, H, and I, as well as one resorcinol derivative and four known compounds, were isolated from rhizomes of Ardisia gigantifolia. Their structures were established by means of spectroscopic analyses. All compounds were tested against cell lines PC-3, EMT6, A549, Hela, RM-1, and(More)