[Chemical constituents from Crotalaria sessiliflora L.].

In this study, we isolated and purified the extracts of the whole plant of Crotalaria sessiliflora L. by column chromatographic.Twelve compounds were isolated and identified as followings: sessiliflorin B(1), quercetin (2), kaempferol (3), soyasapogenol B(4), fernenol (5), neoechinulin A(6), ethyl 4-hydroxybenzoate (7), ethyl caffeate (8), 5,7-dihydroxychromone(9), crotadihydrofuran A(10), butesuperin B(11) and aurantiamide acetate(12).

UPLC-ESI/MS determination of 17 active constituents in two categorized formulas of traditional Chinese medicine, Sanhuang Xiexin Tang and Fuzi Xiexin Tang: application in comparing the differences in decoctions and macerations.

A rapid and sensitive UPLC-ESI/MS method was established and validated to determine 17 active constituents (aconitine, hypaconitine, mesaconitine, benzoylaconine, benzoylhypaconine, benzoylmesaconine, berberine, palmatine, jatrorrhizine, coptisine, baicalein, wogonin, baicalin, wogonoside, emodin, aloe-emodin and rhein) in Sanhuang Xiexin Tang (SXT) and Fuzi Xiexin Tang (FXT), which are two classic compound recipes from Xiexin Tang categorized formulas in traditional Chinese medicien. The separation was performed on a UPLC BEH C18 column gradient eluted using acetonitrile and 0.1% formic acid as mobile phase.

A new phenylpropanoid glycoside from Cirsium setosum.

To study the chemical constituents of Cirsium setosum (Willd.) MB., 70% ethanol extract of the aerial parts was subjected to column chromatography.

Preparative isolation and purification of hydroxyanthraquinones from Rheum tanguticum Maxim. on normal phase silica gel: using a Flash Master Personal system.

A flash chromatography method for preparative separation and purification of five hydroxyanthraquinones from the Chinese medicinal herb Rheum tanguticum Maxim. ex Balf. was developed by using Flash Master Personal(+) systems.

[Study on HPLC fingerprint and quality control of Propolis].

Objective: To study on HPLC fingerprint of Propolis and to control it's quality.

Method: The chromatographic fingerprints of seven samples from different producing areas were determined by RP-HPLC.

Result: The chromatograms of Propolis from different producing areas were very similar.