Studies on Cerbera. I. Cardiac glycosides in the seeds, bark, and leaves of Cerbera manghas L.

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Cardenolides in the seeds, bark, and leaves of Cerbera manghas L. were investigated. From the seeds, tanghinigenin glycosides were isolated along with known digitoxigenin glycosides, cerberin, neriifolin, thevetin B, and 2'-O-acetyl thevetin B. From the barks of root and stem, gentiobiosyl thevetoside, glucosyl thevetoside, and thevetoside of tanghinigenin and 17βH-tanghinigenin were obtained. The cardenolides in the air-dried leaves were found to vary with seasons. 17βH-neriifolin is major and preferable to neriifolin in July, while 17βH-deacetyltanghinin and deacetyltanghinin present in the leaves of Feb.

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