Objective To study the chemical constituents in Lobelia chinensis.Methods Isolation and purification were carried out by silica gel,Sephadex LH-20,and preparative HPLC.Their structures were elucidated by spectroscopy and physicochemical properties. Results Twelve compounds were obtained and identified as: cycloeucalenol(Ⅰ),24-methylenecycloartanol(Ⅱ),phytol(Ⅲ),phytenal(Ⅳ),?-amyrin(Ⅴ),adenosine(Ⅵ),n-butyl-?-Dfructofuranoside(Ⅶ),n-butyl-?-D-fructofuranoside(Ⅷ),n-butyl-?-D-fructopyranoside(Ⅸ),n-butyl-?-D-fructopyranoside(Ⅹ),salicin(Ⅺ),and 5-hydroxymethyl furaldehyde(ⅩⅡ).Conclusion Compounds Ⅰ—Ⅳ and Ⅵ—ⅩⅡ are obtained from the plants of Lobelia L.for the first time and compound Ⅴ is obtained from this plant for the first time.

Objective To study the chemical constituents of Ranunculus ternatus.Methods The constituents were isolated and purified by column chromatographic methods.Their structures were elucidated by physicochemical properties and spectral analyses.Results Nine compounds were obtained and identified as robustaflavone-4′-methyl ether(Ⅰ),kayaflavone(Ⅱ),podocarpusflavone A (Ⅲ),bilobetin(Ⅳ),isoginkgetin(Ⅴ),amentoflavone(Ⅵ),4-oxo-5-(O-?-D-glucopyranosyl)-pentanoic acid-1O-butyl ester(Ⅶ),4-oxo-5-(O-?-D-glucopyranosyl)-pentansaeure-methyl ester(Ⅷ),benzyl alcohol O-?-D-glucopyranoside(Ⅸ).Conclusion Compounds Ⅰ-Ⅵ are obtained from the plants of Ranunculus Linn.for the first time,compound Ⅷ is a new natural product and compound Ⅸ is obtained from this plant for the first time.

OBJECTIVE: To study the chemical constituents of ethanol extract from Cirtus aurantium. METHODS: The ethanol extract of C. aurantium was isolated and purified by silica gel column, open ODS column, preparation liquid chromatography, HW-40F gel column and macroporous resin column. The structure of compounds was analyzed and identified according to physicochemical properties and spectral data (mass spectrum, hydrogen spectrum, carbon spectrum). RESULTS: Eight compounds were isolated from ethanol extract of C. aurantium, i. e. Rimboxo (1), Thymidine (2), Uracil (3), Cyclo-(Leu1-Ile2-Ala3-Thr4-Gly5-Thr6-Phe7) (4), Cyclo- (Leu1-Leu2-Pro3-Tyr4-Gly5-Ser6-Pro7) (5), Meranzin hydrate-β-D-glucoside (6), Umbelliferone (7), Linaloyl glucoside (8). CONCLUSIONS: Compound 1, 2, 3, 8 are isolated from Citrus L. for the first time, compound 4, 5, 6 were isolated from C. aurantium for the first time. The study lays the foundation for quality evaluation of C. aurantium.

OBJECTIVE：To sepa rate and identify the phenols compounds in Aurantii Fructus Immaturus ，and to provide reference for basic research of its effective substances. METHODS ：The phenols compounds were isolated and separated by silica gel，HW-40F gel column ，ODS reversed column and preparation HPLC. Their physicochemical properties and spectral data were used to identify the structures. RESULTS & CONCLUSIONS ：Totally 12 compounds were isolated from Aurantii Fructus Immaturus，identified as 6′-O-trans- cinnamoyl- 3，5-dihydroxyphenyl β-D-glucopyranoside（compound 1），methyl 3-（2′，4′- dihydroxy phenyl ）propionate（compound 2），phloroglucinol（compound 3），aurantiside A （compound 4），5，7，4′-trihydroxy-8， 3′-dimethoxyflavone-3-O-6″-（3-hydroxyl-3-methylglutaroyl） β-D-glucopyranoside （compound 5）， aromadendrin-7-O-β-D- glucopyranside（compound 6），hesperidin-7-O-β-D-glucoside（compound 7），naringin（compound 8），hesperidin（compound 9）， narirutin （compound 10），neoeriocitrin （compound 11），eriocitrin （compound 12）. Among them ，compound 1 is a new compound，and compounds 2 and 3 are isolated from Critus for the first time.