Eremophilanolides and other constituents from the Argentine liverwort Frullania brasiliensis.
Phytochemistry
; 59(2): 205-13, 2002 Jan.
Article
em En
| MEDLINE
| ID: mdl-11809457
Two eremophilanolides, 5-epidilatanolides A and B, as well as a new natural bibenzyl were isolated from an Argentine collection of the liverwort Frullania brasiliensis, along with the known eudesmane-type sesquiterpene lactones nepalensolide A, nepalensolide B, (+)-frullanolide, and (+)-dihydrofrullanolide, the hopanoid zeorin, the four sterols stigmasta-4,22-dien-3,6-dione, stigmasta-4,22-dien-3-one, stigmasterol, and sitosterol, and a trace amount of atraric acid. The structure and stereochemistry of the eremophilanolides and the bibenzyl were established by a combination of extensive NMR spectroscopy experiments and X-ray crystallographic analysis. Absolute configurations of the new compounds were derived on the basis of CD spectra.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Plantas Medicinais
/
Naftalenos
País/Região como assunto:
America do sul
/
Argentina
/
Brasil
Idioma:
En
Revista:
Phytochemistry
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Reino Unido