Germacranolides from Mikania guaco
Αποθηκεύτηκε σε:
| Συγγραφείς: | , , , |
|---|---|
| Μορφή: | artículo original |
| Ημερομηνία έκδοσης: | 2001 |
| Περιγραφή: | Fourteen novel sesquiterpene lactones of the germacranolide type have been isolated from the aerial parts of Mikania guaco: six costunolide, two melampolide and six germacra-4-trans,10(14),11(13)-trien-12,6α-olide derivatives. Except for one compound all the others possess a carbonyl function at C-9. Eight were obtained in the form of four isomer pairs which were difficult to separate. Structure elucidation was based on mass and 1D and 2D NMR measurements. Low energy conformations were obtained by quantum mechanical calculations. Pyrrolizidine alkaloids could not be detected. |
| Χώρα: | Kérwá |
| Ίδρυμα: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| Γλώσσα: | Inglés |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/87850 |
| Διαθέσιμο Online: | https://www.sciencedirect.com/science/article/pii/S0031942200003940#! https://hdl.handle.net/10669/87850 |
| Λέξη-Κλειδί : | Mikania guaco Asteraceae Structure elucidation Sesquiterpene lactones Germacranolides PHYTOCHEMISTRY |