Phytochemical Investigations of Bulbineabyssinica, Bulbinenatalensis and Trachyandra Dwaricata
| dc.contributor.advisor | Mammo, Wendimagegn (PhD) | |
| dc.contributor.author | Nigussie, Gizachew | |
| dc.date.accessioned | 2018-06-19T14:00:29Z | |
| dc.date.accessioned | 2023-11-09T16:17:35Z | |
| dc.date.available | 2018-06-19T14:00:29Z | |
| dc.date.available | 2023-11-09T16:17:35Z | |
| dc.date.issued | 1999-09 | |
| dc.description.abstract | Phytochemical studies were carried out on Bulbine abyssinica , Bulbine natalensis and Trachyandra divaricata. All three plants belong to the family Asphodelaceae. 8. abyssinica is the only Bulbine species knowen to occur in Ethiopia. 8. natalensis and T. divaricata are of South African origin. The extract of the roots of 8. abyssinica afforded knipholone-6'-methyl ether (12) chrysophanol (14), knipholone anthrone (20), isoknipholone (22), knipholone (24), aloeemodin (2), 8-hydroxy-1-methylnaphtho[2,3-c]furan-4,9-dione (16) and 5,8-dihydroxy-1- methylnaphtho[2,3-c]furan-4,9-dione (18). The extract of the roots of 8. natalensis gave chrysophanol (14), knipholone anthrone ( 20), isoknipholone (22), knipholone ( 24), aloe-emodin (2) , 8-hydroxy-1- methylnaphtho[2,3-c]furan- 4, 9- dione (16) and 5,8-dihydroxy-1-methylnaphtho[2,3- c]furan-4,9-dione (18). The occurence of chrysophanol (14), aloe-emodin ( 2), chryslandicin (48) and islandicin ( 58 ) in the roots of T. divaricata was ascertained by direct TLC comparison with authentic samples. No knipholone-type compounds were detected in the extract of the roots of T. divaricata . The structures of the compounds were elucidated based on their 1H NMR, IR, UV and mass spectra and in some cases, by direct comparison with authentic matrials. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/1828 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa Universty | en_US |
| dc.subject | Bulbine abyssinica | en_US |
| dc.title | Phytochemical Investigations of Bulbineabyssinica, Bulbinenatalensis and Trachyandra Dwaricata | en_US |
| dc.type | Thesis | en_US |