3 resultat
An extract of the leaves of Piper guineense Schum. and Thonn. afforded a new lignan, dihydrocubebin, which was characterized by its spectral properties and identified by direct comparison with a reference sample obtained by catalytic hydrogenation of sesamin.
Piper guineense Schum, and Thonn. (Piperaceae), a woodsy climber of Ghana and other parts of West Africa, has been used as a condiment and a native medicinal. Chromatography of an extract of the fruits afforded the amides piperine, N-isobutyloctadeca-trans-2-trans-4-dienamide, sylvatine, delta alpha
Ariensin, a lignan occurring in the exudate of the bark of BURSERA ARIENSIS has been synthesized by a short stereospecific pathway. Dihydrocubebin which occurs in CLEISTANTHUS COLLINUS and PIPER GUINEENSE was also obtained as an intermediate in the reaction sequence.