ABSTRACT
Two new phragmalin-type limonoids orthoesters, encandollens A and B (1 and 2), were isolated from the stem barks of Entandrophragma candollei collected in Ghana. The structures of these compounds were elucidated on the basis of HR-ESI-MS, H and C NMR, HSQC, HMBC, and ROESY data. Compound 1 was a rare C-15 enolic acyl phragmalin-type limonoid orthoester. Compounds 1 and 2 exhibited weak inhibitory effects on NO production in lipopolysaccharide (LPS)-induced RAW 264.7 cells.
Subject(s)
Animals , Mice , Drugs, Chinese Herbal , Chemistry , Pharmacology , Limonins , Chemistry , Pharmacology , Macrophages , Metabolism , Meliaceae , Chemistry , Molecular Structure , Nitric Oxide , Metabolism , Plant Bark , ChemistryABSTRACT
The research work was conducted to investigate the in vitro antimicrobial and antioxidant activity of extract of E. candollei (Family-Meliaceae). Phytochemical screening was done. Disc diffusion technique was used for in vitro antibacterial and antifungal screening. Minimal inhibitory concentration of promising extracts was determined by broth microdilution method. The phytochemical screening showed the presence of flavonoids compounds, tannins and saponins. The inhibition diameters were ranging from 7 to 17 mm and Minimum Inhibitory Concentrations (MIC) from 156.25 to 2500 μg/mL. The ethyl acetate and ethanolic extract revealed a high radical scavenging activity with IC50 ranging from 9.1026 to 11.8298 μg/mL. The Ferric reducing power activity was obtained with active concentration ranging from 12.5 to 200 μg/mL. These results suggest that extracts from E. candollei possess antibacterial and antioxidant activities and therefore justifies their usage in traditional medicine for the treatment of various diseases.