Triterpenoids from leaves of Alstonia scholaris (Linn.) R. Br.
The dichloromethane extracts of the leaves of Alstonia scholaris (L.) R. Br. afforded five triterpenes: lupeol (AS 3), lupeol [AS 1 (1)], cycloeucalenol [AS 1 (2)], cycloartanol [AS 1 (3)], lupeol acetate (AS 2) and betulin (AS 7). Their structures were elucidated extensively by 1D and 2D NMR spectr...
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oai:animorepository.dlsu.edu.ph:etd_masteral-106892022-11-14T06:55:47Z Triterpenoids from leaves of Alstonia scholaris (Linn.) R. Br. Lim, Kosta Fremielle C. The dichloromethane extracts of the leaves of Alstonia scholaris (L.) R. Br. afforded five triterpenes: lupeol (AS 3), lupeol [AS 1 (1)], cycloeucalenol [AS 1 (2)], cycloartanol [AS 1 (3)], lupeol acetate (AS 2) and betulin (AS 7). Their structures were elucidated extensively by 1D and 2D NMR spectroscopy. This is the first report on the isolation of cycloeucalenol and cycloartanol from the leaves of A. scholaris. The mixture of AS 1 exhibits a potential hypoglycemic property at a dose of 25 mg/kg BW. 2010-04-01T07:00:00Z text application/pdf https://animorepository.dlsu.edu.ph/etd_masteral/3851 https://animorepository.dlsu.edu.ph/cgi/viewcontent.cgi?article=10689&context=etd_masteral Master's Theses English Animo Repository Alstonia—Analysis Chemistry |
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De La Salle University |
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De La Salle University Library |
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Asia |
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Philippines Philippines |
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| language |
English |
| topic |
Alstonia—Analysis Chemistry |
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Alstonia—Analysis Chemistry Lim, Kosta Fremielle C. Triterpenoids from leaves of Alstonia scholaris (Linn.) R. Br. |
| description |
The dichloromethane extracts of the leaves of Alstonia scholaris (L.) R. Br. afforded five triterpenes: lupeol (AS 3), lupeol [AS 1 (1)], cycloeucalenol [AS 1 (2)], cycloartanol [AS 1 (3)], lupeol acetate (AS 2) and betulin (AS 7). Their structures were elucidated extensively by 1D and 2D NMR spectroscopy. This is the first report on the isolation of cycloeucalenol and cycloartanol from the leaves of A. scholaris. The mixture of AS 1 exhibits a potential hypoglycemic property at a dose of 25 mg/kg BW. |
| format |
text |
| author |
Lim, Kosta Fremielle C. |
| author_facet |
Lim, Kosta Fremielle C. |
| author_sort |
Lim, Kosta Fremielle C. |
| title |
Triterpenoids from leaves of Alstonia scholaris (Linn.) R. Br. |
| title_short |
Triterpenoids from leaves of Alstonia scholaris (Linn.) R. Br. |
| title_full |
Triterpenoids from leaves of Alstonia scholaris (Linn.) R. Br. |
| title_fullStr |
Triterpenoids from leaves of Alstonia scholaris (Linn.) R. Br. |
| title_full_unstemmed |
Triterpenoids from leaves of Alstonia scholaris (Linn.) R. Br. |
| title_sort |
triterpenoids from leaves of alstonia scholaris (linn.) r. br. |
| publisher |
Animo Repository |
| publishDate |
2010 |
| url |
https://animorepository.dlsu.edu.ph/etd_masteral/3851 https://animorepository.dlsu.edu.ph/cgi/viewcontent.cgi?article=10689&context=etd_masteral |
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1751550395289698304 |