6 вынікі
Smilax glabra Roxb. has been used for a long time as both food and folk medicine. In the present study, phenolic-enriched extract of S. glabra (PEESG) was extracted with 70% ethanol and purified by HP-20 column chromatography. Its antioxidant and anti-inflammatory activities were evaluated by
The structures of two flavanonol glycosides isolated from Smilax glabra, named smitilbin and neosmitilbin, have been revised to isoastilbin and neoastilbin, respectively. The revised structures were determined based on intensive studies of chemical interconversion, NMR spectroscopy, and X-ray
OBJECTIVE
To identify dihydroflavonol glycoside isomers in Smilax glabra.
METHODS
The sample was analyzed by HPLC-MS in combination with HPLC-1H-NMR.
RESULTS
Four dihydroflavonol glycoside isomers were identified as astilbin, neoastilbin, isoastilbin, neoisoastilbin.
CONCLUSIONS
The method is simple
An offline two-dimensional recycling high-speed countercurrent chromatography (2D R-HSCCC) strategy with extrusion mode was developed for isolating polyphenols from the rhizome of Smilax glabra. Firstly, the ethyl acetate extract was divided into two fractions, Fr.1 and Fr.2, by silica gel column
Smilax glabra Roxb. (SG), a Chinese medicinal herb which called "tufuling", is believed to be effective in treating hyperuricemia and gout symptoms. But the active substance and pharmacological mechanism of reducing uric acid remain unknown. This study aimed to obtain the OBJECTIVE
To investigate the chemical constituents from the rhizomes of Smilax glabra.
METHODS
The compounds were isolated by column chromatography with silica gel, Diaion HP-20 and ODS as packing materials, and HPLC. Their structures were determined on the basis of their spectral