NEW SESQUITERPENE LACTONES FROM MONTANOA-TOMENTOSA SUBSP XANTHIIFOLIA

Authors
LIDIAPEREZ A CABALLERO MBA ORTEGA A GAVINO R DEVIVAR AR
Citation
A. Lidiaperez et al., NEW SESQUITERPENE LACTONES FROM MONTANOA-TOMENTOSA SUBSP XANTHIIFOLIA, Planta medica, 60(3), 1994, pp. 263-266
Citations number
16
Categorie Soggetti
Pharmacology & Pharmacy","Plant Sciences
Journal title
Planta medica → ACNP
ISSN journal
00320943
Volume
60
Issue
3
Year of publication
1994
Pages
263 - 266
Database
ISI
SICI code
0032-0943(1994)60:3<263:NSLFMS>2.0.ZU;2-U
Abstract
A chemical examination of Montanoa tomentosa subsp. xanthiifolia affor ded in addition to some known compounds, four new sesquiterpene lacton es: 4 beta,5 alpha-epoxy-8 alpha-isobutyryloxy-trans-germacr-1 (10)-en -12,6 beta-olide (1a), 4 beta,5 alpha-epoxy-7 alpha-hydroxy-8 alpha-is obutyryloxy-trans-germacr-1(10)-en-12,6 beta-olide (1b), (1R,4S)-1,5-c yclo-5 alpha-hydroxy-8 alpha-isobutyryloxy-7 alpha, 10 alpha-oxagermac ran-12,beta-olide (2a), and 4 beta-hydroxy-8 alpha-isobutyryloxy-7 alp ha,10 alpha-oxaguaian-12,6 beta-olide (3). The structures were determi ned mainly by spectroscopic methods. The structure of 1b was confirmed by an X-ray analysis.