Now showing items 1-10 of 18
Constituents of Cassia rugosa
(Fitoterapia, 1993-01-01) [Artigo]
Composition of the volatile compounds from Aniba canelilla (H. B. K.) Mez. extracted by CO2 in the supercritical state
(Revista Brasileira de Farmacognosia, 1998-01-01) [Artigo]
Os constituintes químicos voláteis das cascas de Aniba canelilla (H. B. K.) Mez. (Lauraceae), obtidos por SFE-CO2 (extração com fluido supercrítico utilizando CO2), foram analisados por HRGC-FID (cromatografia gasosa de ...
AN ISOCOUMARIN DERIVATIVE FROM PAEPALANTHUS BROMELIOIDES
(Acta Crystallographica Section C: Crystal Structure Communications, 1994-08-15) [Artigo]
The structure of 5,7,9,10-tetramethoxy-3-methyl-1 H-naphtho[2,3-c]pyran-1-one, C18H18O6, a derivative of a natural isocoumarin isolated from Paepalanthus bromelioides, was determined by X-ray analysis, which unequivocally ...
A 1H and 13C NMR study of a novel naturally occurring furocoumarin from Dorstenia cayapiaa
(Spectrochimica Acta Part A: Molecular Spectroscopy, 1992-10-01) [Artigo]
The chemical structure of a naturally occurring furocoumarin from Dorstenia cayapiaa (1) has been established by 1D and 2D NMR methods. © 1992.
Further triterpenes, steroids and furocoumarins from Brazilian medicinal plants of Dorstenia genus (Moraceae)
(Journal of the Brazilian Chemical Society, 1997-12-01) [Artigo]
The hexane-soluble fractions from the rhizomes or from the leaves from five Dorstenia (Moraceae) species (D. bahiensis Kl., D. bryoniifolia Mart ex. Miq., D. carautae C.C.Berg, D. cayapiaa Vell. and D. heringerii Car. & ...
Effect of constituents of the foliar wax of Didymopanax vinosum on the foraging activity of the leaf-cutting ant Atta sexdens rubropilosa
(Entomologia Experimentalis et Applicata, 1998-01-01) [Artigo]
Leaf epicuticular waxes may affect substrate selection by leaf-cutting ants, and host recognition by several phytophagous insects. The influence of the crude epicuticular wax of Didymopanax vinosum E. March. (Araliaceae), ...
New naphthopyranone glycosides from Paepalanthus vellozioides and Paepalanthus latipes
(Journal of Natural Products, 1999-05-01) [Artigo]
Three new compounds-3,4-dihydro-10-hydroxy-7-methoxy-3-(R)-methyl-1H-3,4-dihydronaphtho-]2,3c]pyran-1-one-9-O-beta-D-glucopy ranoside (1), 3,4-dihydro-10-hydroxy-7-methoxy-3-(R)-methyl-1H-3,4-dihydronaphtho-[2,3c]-pyran- ...
Diterpenic adducts from Xylopia species
(Phytochemistry, 1991-12-01) [Artigo]
Xylopia emarginata and X. amazonica contain diterpene adducts probably originating from Diels-Aider reaction between labdane and kaurane derivatives. This type of substance seems to be characteristic of the genus Xylopia. © 1991.
Naphthopyranone glycosides from Paepalanthus bromelioides
(Phytochemistry, 1998-09-03) [Artigo]
Two new naphtho[2,3-C]pyran-1-one glycosides, paepalantine-9-O-β-D- glucopyranoside and paepalantine-9-O-β-D-allopyranosyl(1 → 6)glucopyranoside, were isolated from an ethanolic extract of capitula from Paepalanthus ...
OFF-LINE SUPERCRITICAL-FLUID EXTRACTION - HIGH-RESOLUTION GAS-CHROMATOGRAPHY APPLIED TO THE STUDY OF MORACEAE SPECIES
(Phytochemical Analysis, 1993-09-01) [Artigo]
Supercritical fluid extraction with CO2, Performed in a home-made system, of rhizomes of Dorstenia bryoniifolia Mart. ex Miq. (Moraceae) and of bark roots of Brosimum gaudichaudii Trecul (Moraceae) afforded crude extracts ...