A new diterpene acid, staudtienic acid 111, has been isolated from Staudtia Smerunensis, and its structure has been determined from a spectroscopic study including ir, ms, and 'H and I3C nmr.
Bei der Behandlung mit Chlorkohlensäure‐2,2,2‐trichlorethylester (II) erhält man aus dem tertiären N,N‐Dimethylamino‐steroid (I) glatt unter Desaminierung das Olefin (III).
The stem bark and seeds of Staudtia kamerunensis have been investigated for the first time. From the hexane extract of the seeds, glycerol tritetradecanoate (trimyristin, glycerol trimyristate) and six lignans were isolated. These lignans are: otobain, hydroxyotobain, otobaphenol, licarin A, licarin B and (-) dihydroxyguaiaretic acid. The ethyl acetate extract of the stem bark gave a seventh lignan, otobuene.
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