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Olaf Kunert Gandhe Sreekanth Gummadi Sreedhar Babu Belvotagi Venkat Rao Adavi Rao Marupaka Radhakishan Bobbala Ravi Kumar Robert Saf Achanta Venkata Narasimha Appa Rao Wolfgang Schühly 《化学与生物多样性》2009,6(8):1185-1192
We report on the chemical investigation of dikamali gum, which is the resin of Gardenia gummifera and G. lucida (Rubiaceae). Six new cycloartane triterpenes, dikamaliartanes A–F ( 1 – 6 , resp.), together with a known flavonoid ( 7 ), were isolated and identified by NMR spectroscopy. All six cycloartanes are characterized by an open A‐ring with a free COOH group at C(3). In four of them, the C‐atoms C(23)–C(27) form a 4‐methylfuran‐2‐yl moiety. Bacterial assays using Staphylococcus aureus, Candida albicans, and Mycobacteria have been carried out but did not reveal significant activity. 相似文献
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