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Triterpenes from Maytenus canariensis and synthesis of a derivative from betulin
Abstract The new triterpenes 3β,28,30-lup-20(29)ene-triol and 28,30-dihydroxy-lup-20(29)-en-3-one have been isolated from Maytenus canariensis and their structures determined by means of spectralExpand
Steroidal saponins from the bark of Dracaena draco and their cytotoxic activities.
From the stem bark of Dracaena draco, three new compounds, namely, draconins A-C (1-3), were isolated, along with 17 known compounds, whose structures were elucidated on the basis of spectroscopic data interpretation. Expand
New lanostanoids from the fungus Ganoderma concinna.
Three new compounds were isolated from Ganoderma concinna along with 12 known compounds and induce apoptosis in human promyelocytic leukemia HL-60 cells, as indicated by examining the morphological features of cells and detection of DNA fragmentation by gel electrophoresis. Expand
Carotane sesquiterpenes from Ferula lancerottensis
Abstract Six new carotane sesquiterpenes, the p -hydroxybenzoate of epoxyjaeschkeanadiol the p -methoxybenzoate and p -hydroxybenzoate of lancerodiol, lancerodiol, the p -hydroxybenzoate ofExpand
Lanostanoid Triterpenes from Ganoderma lucidum
Two new lanostanoids lucidadiol (1) and lucidal (2), were isolated from an ethanolic extract of Ganoderma lucidum, together with the known compounds ganodermadiol; ganodermenonol; ganoderic acid DM,Expand
4,5-Dihydroblumenol A, a New Nor-isoprenoid from Perrottetia multiflora
A new carotenoid-like compound, 4,5-dihydroblumenol A and blumenol B were isolated from Perrottetia multiflora, the first report of C-13 type metabolites from this family, and the structure of the new compound was elucidated by spectoscopic studies. Expand
A first study of antibacterial activity of diterpenes isolated from some Salvia species (Lamiaceae)
Abstract Products from three species of Salvia were tested for activity against Gram-positive Bacillus subtilis and Staphylococcus aureus and Gram-negative Escherichia coli and Salmonella sp. onExpand
Flavonoids from Salvia texana
Abstract From a methanolic root extract of Salvia texana, 5-hydroxy-7,4′-dimethoxyflavone and (+)-2(S)-5-hydroxy-7-methoxyflavanone were isolated and characterized by spectroscopy. The absoluteExpand