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ent-Halimane Diterpenes and a Guaiane Sesquiterpene from Cladogynos orientalis

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journal contribution
posted on 28.01.2005, 00:00 by Mayuree Kanlayavattanakul, Nijsiri Ruangrungsi, Toshiko Watanabe, Masatoshi Kawahata, Bruno Therrien, Kentaro Yamaguchi, Tsutomu Ishikawa
Four new ent-halimane diterpenes (14) and one new guaiane sesquiterpene (5) were isolated from the CHCl3 extract of the roots of Cladogynos orientalis, together with six known compounds. The structures of compounds 15 were established using spectroscopic methods, and the stereochemistry of chettaphanin I (6) was confirmed by X-ray crystallography.