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To study the chemical constituents in stem rind of Wikstroemia indica.The constituents were isolated by column chromatographies with silica gel and ODS, and identified by NMR, MS spectra.Six compounds, daphnoretin-7-O-beta-D-glucoside (1), quercitin (2), physcion (3), kaempferol 3-rutinoside (4), D-primev-ersyl genkwanine (5), and anabellamide (6) were isolated and identified.All of them were isolated from this plant for the first time.

To develop an HPLC method for determination of components in root of Saposhnikovia divaricata.The separation of four components was achieved on a reversed-phase Alltima C18 column with MeOH-H2O gradient elution at a flow rate of 1.0 mL x min(-1).Six samples were determined and there is no distinct difference between the contents determined by the new and old methods.The new method is more simple and convenient than the old method.

To study the chemical constituents form stem bark of Wikstroemia indica.The constituents were isolated by column chromatography on silica gel and ODS, and identified by spectroscopic methods.Seven compounds, daphnoretin (I), tricin (II), daucosterol (III), beta-sitosterol (IV), umbelliferone (V), genkwanin (VI), and 6'-hydroxy, 7-O-7'-dicoumarin (VII), were isolated and identified.Compound VII was a new compound and compounds III, V were isolated from this plant for the first time.

To establish a quality standard of Peucedanum praeruptorum for Chinese Pharmacopoeia (2005).The presence of (+/-)-praeruptorin A were identified and assayed by TLC and HPLC, respectively.Linearity of marker was obtained over the range of 0.17696-0.88480 microg (r=0.9999). The average recovery rate was 99.72% (RSD=0.40%).TLC is specific. The method of quantity is accurate, reappearance, simple, rapid, and suitable for the quality control of P. praeruptorum.