Showing papers by "César A.N. Catalán published in 1994"
TL;DR: In this article, a reinvestigation of Stevia breviaristata afforded, in addition to several known compounds, seven new sesquiterpene lactones: four guaianolides, two germacranolides and one eudesmanolide.
17 citations
TL;DR: The chloroform extract of the aerial parts of Xanthium cavanillesii provided several known xanthanolides, including one new xanthium-boronide and a bis-norxanthanolate.
13 citations
TL;DR: Aerial parts of Gochnatia glutinosa furnished two homofarnesane lactones, a new farnesane-based sesquiterpene lactone and several known flavonoids as discussed by the authors.
10 citations
TL;DR: Three sesquiterpenes (1-3) possessing the 2.6,6,9-tetramethyltricyclo[5.4.0 2,4 ]undecane (lippifoliane) skeleton were isolated as minor constituenrs of Lippia integrifolia as mentioned in this paper.
Abstract: Three new sesquiterpenes (1-3) possessing the 2,6,6,9-tetramethyltricyclo[5.4.0.0 2,4 ]undecane (lippifoliane) skeleton were isolated as minor constituenrs of Lippia integrifolia. Their structures and stereochemistry were elucidated from nmr data including double resonance experiments, COSCV, and nOe, and by comparison of their 13 C-nmr spectra with those of lippifoli-1(6)-en-5-one
9 citations
TL;DR: Aerial parts of Mikania dusenii afforded in addition to mikanolide and related known sesquiterpene dilactones one new dilactone, two new germacrano as discussed by the authors.
5 citations