| triterpenoids from the leaves of alphitonia xerocarpus baill and their biological activity. | ten previously undescribed triterpenoid saponins and a previously undescribed norlupane triterpenoid were isolated, with three known saponins, four known flavonoids, two known lupane derivatives, sitosterol and 6'-heptadecanoyl-3-o-β-d-glucopyranosylsitosterol from the leaves of alphitonia xerocarpus (rhamnaceae), an endemic tree of new caledonia. the chemical structures of the purified compounds were identified by nuclear magnetic resonance and mass spectrometry. the isolated compounds were tes ... | 2016 | 27452452 |
| isolation and partial characterization of bacteria (pseudoalteromonas sp.) with potential antibacterial activity from a marine costal environment from new caledonia. | marine bacteria are a rich source of bioactive metabolites. however, the microbial diversity of marine ecosystem still needs to be explored. the aim of this study was to isolate and characterize bacteria with antimicrobial activities from various marine coastal environment of new caledonia. we obtained 493 marine isolates from various environments and samples of which 63 (12.8%) presented an antibacterial activity against a panel of reference pathogenic strains (staphylococcus aureus, pseudomona ... | 2014 | 24106876 |