Wei-Hao Wang

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Two new triterpenoid saponins, loniceroside D (1) and loniceroside E (2), were isolated from the dry flowers and buds of Lonicera japonica Thunb., along with seven known compounds, chlorogenic acid (3), sweroside (4), vogeloside (5), epi-vogeloside (6), loniceroside A (7), loniceroside B (8), and loniceroside C (9). Their structures were elucidated on the(More)
OBJECTIVE To establish a high performance liquid chromatography (HPLC) method for determination of matrine, sophoridine and oxymatrine in Compound Kushen Injection. METHOD Alltima amino column was used with acetonitrile-3% phosphoric acid-ethyl alcohol (80:10:10) as the mobile phase and the detection wavelength was at 220 nm. RESULT The mean recovery of(More)
OBJECTIVE To determine the contents of 6-Gingerol in Rhizoma Zingiberis Recens. METHOD HPLC method was used, with Alltech C18 column, acetonitrile-methol-water (43:5:52) as mobile phase with a flow rate of 0.8 mL.min-1, detecting wavelength 280 nm, and column temperature 35 degrees C. RESULT Retained time of 6-gingerol was near 19 min, showing a good(More)
To review the chemical, pharmacological, studies on ginger (Zingiber officinale) in the last ten years, and also its processing history and clinical uses. Gingerols and related compounds in ginger have many pharmacological activities. Chemical studies should be given sufficiently emphasis, and advances of the chemical study will promote the other related(More)
A film comprising randomly distributed metal/dielectric/metal sandwich nanopillars with a distribution of cross-sectional diameters, displayed extremely low reflectance over the blue-to-red regime, when coated on glass and illuminated normally. When it is illuminated by normally incident light, this sandwich film (SWF) has a low extinction coefficient, its(More)
ETHNOPHARMACOLOGICAL RELEVANCE Gastrodia elata Blume (Orchidaceae) is commonly called Tian ma in Chinese and mainly distributed in the mountainous areas of eastern Asia, such as China, Korea, Japan and India. It is an extensively used traditional Chinese herbal medicine in the clinical practice of traditional Chinese medicine, to treat headache, migraine,(More)
A comprehensively comparison of the chemical profiles between sun-drying BJ (NBJ) and sulfur-fumigated BJ (SBJ) was conducted by HPLC analysis and the discrepant peaks were identified or tentatively assigned by HPLC-ESI-MSn. A total of 32 chemical components were used for qualitative comparison. Meanwhile, a quantitative comparison of BJwere conducted by(More)
Two series of biscoumarin (1-3) and dihydropyran (4-12) derivatives were successfully synthesized as new antitumor and antibacterial agents. The molecular structures of four representative compounds 2, 4, 7 and 10 were confirmed by single crystal X-ray diffraction study. The synthesized compounds (1-12) were evaluated for their antitumor activities against(More)
OBJECTIVE To establish a new quality evaluation method for Chinese herbal medicine, using one chemical reference substance to calculate multi-components simultaneously. METHOD Relative correction factors (RCF) of mutongsaponin B and C to saponin PJ1, a characteristic component as marker, were calcalated in The chromatographic conditions for determination(More)