10[alpha]-Hydroxy-4,9-dimethyl-13-(pipyridin-1-ylmethyl)-3,8,15-trioxatetracyclo[10.3.0.02,4.07,9]tetradecan-14-one
| Autor: | Mohamed Moumou, Ahmed Benharref, Abdelghani Oudahmane, Ahmed Elhakmaoui, Moha Berraho |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Acta Crystallographica Section E, Vol 67, Iss 11, Pp o3003-o3004 (2011) |
| Druh dokumentu: | article |
| ISSN: | 16005368 1600-5368 |
| DOI: | 10.1107/S1600536811042644 |
| Popis: | The title compound, C20H31NO5, was synthesized from 9α-hydroxyparthenolide (9α-hydroxy-4,8-dimethyl-12-methylen-3,14-dioxa-tricyclo[9.3.0.02,4]tetradec-7-en-13-one), which was isolated from the chloroform extract of the aerial parts of Anvillea radiata. The molecule is built up from fused five-and ten-membered rings with the pipyridin-1-yl-methyl group as a substituent. The ten-membered ring adopts an approximate chair–chair conformation, while the six- and five-membered rings display chair and envelope conformations, respectively. The dihedral angle between the mean planes of the ten-membered ring and the lactone ring is 20.8 (3)°. An intramolecular O—H...N hydrogen-bond occurs. The crystal structure is stabilized by weak intermolecular C—H...O hydrogen bonds. |
| Databáze: | Directory of Open Access Journals |
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