callicarpa/silica

OBJECTIVE To study the ethyl acetate-soluble chemical constituents of Callicarpa kwangtungensis. METHODS The chemical constituents were isolated by column chromatography on silica gel, Sephadex LH-20 and MPLC. Their chemical structures were elucidated on the basis of special analysis. RESULTS Seven

OBJECTIVE To study the ethyl acetate-soluble chemical constituents of Callicarpa kwangtungensis. METHODS The chemical constituents were isolated by column chromatography on silica gel, Sephadex LH-20 and MPLC. Their chemical structures were elucidated on the basis of special analysis. RESULTS Eleven

The chemical consitituents from cytotoxic fraction of the Callicarpa nudiflora extract were isolated and purified by a combination of HP-20 macroporous resin, silica gel and Sephadex LH-20 column chromatographies. The structures were elucidated on the basis of the spectroscopic data and comparison

OBJECTIVE To study the hemostatic effect of chemical constituents from Callicarpa nudiflora. METHODS The chemical constituents were isolated and purified via silica gel and Sephadex LH-20 column chromatography. Their structures were determined on the basis of spectral analysis. prothrombin time

A new triterpenoid saponin and fourteen known triterpenoids were isolated from the methanol extract of the stems and leaves of Callicarpa integerrima Champ, which is used in Chinese folk medicine for stopping bleeding, expelling the wind, dissipating stagnation, and treating scrofula, by using

OBJECTIVE To study the chemical constituents of Callicarpa nudiflora. METHODS The chemical constituents were isolated and purified by column chromatography on silica gel, ODS, Sephadex LH-20 and MPLC. Their structures were elucidated on the basis of physicochemical properties and special