El-Towesy, O. (1997). SESQUITERPENE LACTONES AND FLAVONOIDS FROM INULA BRITANNICA (L.). test, 20(2), 163-168. doi: 10.21608/bfsa.1997.68756
Omar M. A. El-Towesy. "SESQUITERPENE LACTONES AND FLAVONOIDS FROM INULA BRITANNICA (L.)". test, 20, 2, 1997, 163-168. doi: 10.21608/bfsa.1997.68756
El-Towesy, O. (1997). 'SESQUITERPENE LACTONES AND FLAVONOIDS FROM INULA BRITANNICA (L.)', test, 20(2), pp. 163-168. doi: 10.21608/bfsa.1997.68756
El-Towesy, O. SESQUITERPENE LACTONES AND FLAVONOIDS FROM INULA BRITANNICA (L.). test, 1997; 20(2): 163-168. doi: 10.21608/bfsa.1997.68756

SESQUITERPENE LACTONES AND FLAVONOIDS FROM INULA BRITANNICA (L.)

Bulletin of Pharmaceutical Sciences Assiut University
Article 7, Volume 20, Issue 2, December 1997, Pages 163-168    PDF (313.81 K)
Document Type: Original Article
DOI: 10.21608/bfsa.1997.68756
Author
Omar M. A. El-Towesy
Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, Egypt
Abstract
From Inula britannica (L.) five known sesquiterpene lactones were isolated and identified as 4a,5b-epoxyeupatolide (1); 4a,5b-epoxydesacetylovatifolin (2); 5a-hydroxydehydroleucodin (3); 14-hydroxy-2-oxoguaia-1-(10)-3-dien-5a,11bH-12,6a-olide (4) and 2-oxo-8a,10b-dihydroxyguai-3-en-1-a,5a,6b,11bH-12,6-olide (5) in addition to three known flavonoids viz. apigenin (6), apigenin-7-O-b-glucopyranoside (7) and quercetin, 3',4'-dimethoxy-7-O-b-glucopyranoside (8). The structures of these compounds were depicted through spectral studies. All the isolated compounds were reported for the first time from the mentioned plant.
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