ABSTRACT
AIM To investigate the distribution of volatile components and inorganic elements from Vernonia amygdalina Del..METHODS Volatile components and inorganic elements in different parts of V.amygdalina were analyzed and measured by HS-SPME-GC-MS and ICP-OES techniques.RESULTS Forty-four,sixty-seven,fifty-seven chemical compounds were identified from the root,stem and leaves of V.amygdalina,accounting for 83.9％,92.0％,83.9％ of the volatile components,respectively.Nineteen inorganic elements in total were detected,and the contents of As,Be,Bi,Co were too low to detect;The three inorganic elements with the highest content in root,stem and leaves were Mg,Al and Fe.CONCLUSION There are abundant volatile components and inorganic elements in V.amygdalina,with varying distribution in its different parts.
ABSTRACT
Objective: To study the chemical constituents from the stems and leaves of Tamarix chinensis. Methods: The compounds were isolated and purified by silica gel, Sephadex LH-20, ODS column chromatography, and their structures were identified on the basis of physicochemical properties and spectroscopic analysis. Results: Fifteen compounds were isolated and identified as tamarixetin-7-O-β-D-glucoside (1), tamarixetin-3-O-α-L-rhamnoside (2), rutin (3), 5, 7, 3′, 5′-tetrahydroxy-6, 4′-dimethoxyflavone (4), quercetin-7, 3′, 4′-trimethyl ether (5), kaempferol-3-O-β-D-glucuronide (6), apigenin (7), rhamnocitrin (8), kaempferol (9), quercetin (10), tamarixetin (11), betulinic acid (12), 2α, 3β-dihydroxy-urs-12-en-28-oic acid (13), β-amyrin acetate (14), and 2α, 3β, 23-trihydroxyolean-12-ene (15). Conclusion: Compounds 1-7 and 13-15 are isolated from this plant for the first time, and compounds 13 and 15 are isolated from this genus for the first time.
ABSTRACT
OBJECTIVE: To study the chemical constituents of triterpenoids from Lantana camara Linn. METHODS: The compounds were isolated and purified by repeated column chromatography on silica gel, Sephadex LH-20 and ODS. Their structures were i-dentified by physicochemical properties and spectroscopic analysis. RESULTS: Eleven compounds were isolated and identified as lantadene A (1), lantadene B (2), oleanonic acid (3), lupeol acetate (4), 3β-acetyloleanolic acid (5), oleanolic acid (6), 3-O-acetyl pomolic acid(7), 3β, 25-epoxy-3α, 21α-dihydroxy-22β-angeloyloxyolean-12-ene-28-oic acid (8), betulinic acid (9), 2α, 3α, 19-trihy-droxy-12-en-28-ursolic acid(10), 22-oxo-3β, 24-dihydroxyolean-12-ene(11). CONCLUSION: Compounds 4, 5, 7-11 are isolated from this plant for the first time.