Germacranolides from Mikania guaco

 

Wedi'i Gadw mewn:
Manylion Llyfryddiaeth
Awduron: Rüngeler, Peter, Brecht, Volker, Tamayo Castillo, Giselle, Merfort, Irmgard
Fformat: artículo original
Dyddiad Cyhoeddi:2001
Disgrifiad: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.
Gwlad:Kérwá
Sefydliad:Universidad de Costa Rica
Repositorio:Kérwá
Iaith:Inglés
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/87850
Mynediad Ar-lein:https://www.sciencedirect.com/science/article/pii/S0031942200003940#!
https://hdl.handle.net/10669/87850
Allweddair:Mikania guaco
Asteraceae
Structure elucidation
Sesquiterpene lactones
Germacranolides
PHYTOCHEMISTRY