1. Monoterpenes with antibacterial activities from a Cameroonian medicinal plant Canthium Multiflorum (Rubiaceae).
- Author
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Kouam SF, Ngouonpe AW, Bullach A, Lamshöft M, Kuigoua GM, and Spiteller M
- Subjects
- Animals, Anti-Bacterial Agents isolation & purification, Antineoplastic Agents, Phytogenic isolation & purification, Antineoplastic Agents, Phytogenic pharmacology, Antineoplastic Agents, Phytogenic therapeutic use, Antiparasitic Agents isolation & purification, Cameroon, Cell Line, Tumor, Iridoids isolation & purification, Molecular Structure, Monoterpenes isolation & purification, Neoplasms drug therapy, Phytotherapy, Plant Components, Aerial, Plant Extracts chemistry, Plants, Medicinal, Plasmodium falciparum drug effects, Rats, Anti-Bacterial Agents pharmacology, Antiparasitic Agents pharmacology, Bacteria drug effects, Iridoids pharmacology, Monoterpenes pharmacology, Plant Extracts pharmacology, Rubiaceae chemistry
- Abstract
Investigation of the crude extract obtained from the aerial parts of Canthium multiflorum led to the isolation of a new iridoid (1) together with twelve known compounds. The structures of these compounds were elucidated by interpretation of 1D and 2D NMR spectroscopic data, accurate mass measurements and comparison with analytical data of previously known analogues. Most of the isolated compounds have been reported for the first time from C. multiflorium. The antimicrobial activities of the isolated compounds were evaluated on five different bacterial strains using agar diffusion technique. The Gram-positive bacterium Staphylococcus aureus subsp. aureus (DSM 799), and the Gram-negative bacteria Actinobacter calco-aceticus (DSM 30006), Serratia plymuthica (DSM 4540), Pseudomonas stutzeri (DSM 4166) and Escherichia coli (DSM 1116) were employed for this purpose. The new iridoid, named 6-oxo-genipin (1), demonstrated significant inhibitory activity against all microbial strains tested, especially the pathogen Staphylococcus aureus. In addition, the compounds 3, 4 and 9 exhibited antiplasmodial activity against Plasmodium falciparum strain K1 and weak cytotoxicity against L6 cell lines., (© 2013 Elsevier B.V. All rights reserved.)
- Published
- 2013
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