Wei-Sheng Feng

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AIM OF THE STUDY To evaluate the anti-diabetic effects of the total flavonoids of Selaginella tamariscina (Beauv.) Spring (TFST), and to explore the pertinent mechanism. MATERIALS AND METHODS High fat diet and STZ (35 mg/kg) induced diabetic rats were administered with TFST at graded oral doses (100, 200 and 400mg/kg/day, ig.) for 8 weeks. A range of(More)
AIM OF THE STUDY The present study was designed to investigate the effects of the EtOH and H(2)O extracts of Selaginella tamariscina (Beauv.) Spring on hyperglycemia in diabetic rats and HepG2 cells, and to confirm the active fractions of EtOH extract in HepG2 cells. MATERIALS AND METHODS HepG2 cells and type II diabetic rats induced by low-dose(More)
Two new prenylated flavonoids, sinoflavonoids A-B, were isolated from the dried fruits of Sinopodophyllum emodi by silica gel column chromatography (SGCC) and high-speed counter-current chromatography (HSCCC). The 95% ethanol extract was partitioned with petroleum ether, dichloromethane, ethyl acetate, and n-butanol in water, respectively. The ethyl acetate(More)
AIM To study the chemical constituents of Selaginella tamariscina (Beauv.) Spring. METHODS The compounds were isolated and purified by macroporous adsorption resin, Sephadex LH-20 and silica gel column chromatography and identified on the basis of their physicochemical and spectral data. RESULTS Four compounds were obtained from the n-BuOH fraction of(More)
AIM To study the chemical constituents of Selaginella tamariscina (Beauv.) Spring. METHODS Various chromatographic techniques were used to separate and purify the chemical constituents. Their physico-chemical properties and spectral data were used to elucidate the structures. RESULTS Four compounds were isolated from the n-BuOH fraction of the(More)
AIM To study the chemical constituents of the water-extracts of Selaginella tamariscina (Beauv.) Spring. METHODS Various chromatographic techniques were used to separate and purify the constituents. Their physico-chemical properties and spectral data were used to elucidate the structures. RESULTS Nine compounds were isolated and identified as(More)
A new apiose-containing kaempferol trioside, kaempferol-3-O-α-L-rhamnosyl-(1‴ → 6″)-O-β-D-galactopyranosyl-7-O-β-D-apiofuranoside, along with 16 known compounds, were isolated from 50% acetone extract of Silphium perfoliatum L. Their structures were elucidated by acid hydrolysis and spectroscopic techniques including UV, IR, MS, ¹H, ¹³C, and 2D-NMR. In(More)
To study the chemical constituents from the leaves of Celastrus gemmatus Loes., chromatographic methods were used to isolate and purify the chemical constituents, their structures were elucidated by the physiochemical characteristics and spectral data. Nine compounds were obtained and identified as (-)-massoniresinol 3a-O-beta-D-glucopyranoside (1),(More)
Two new secolignans, 3,4-trans-3-hydroxymethyl-4-[bis(4-hydroxyphenyl)methyl]butyrolactone (1) and 2,3-trans-3,4-trans-2-methoxy-3-hydroxymethyl-4-[bis(4-hydroxyphenyl)methyl]tetrahydrofuran (2), together with six known compounds, were isolated from the whole grass of Selaginella sinensis (Desv.) Spring. Their structures were elucidated by NMR and MS(More)
Descurainia sophia is widely distributed in China and is one of the most troublesome annual weeds. It has diverse medicinal usage. D. sophia has abundant oil, making it an important oil plant in China. The main goal of this study was to obtain the maximum yield of the oil by an optimal selection of supercritical fluid extraction parameters. According to the(More)