Separation of flavonoids and naphthopyrones from four brazilian Paepalanthus species by dropfet countercurrent chromatography
Tipo de material:
ArtigoAssunto(s): Recursos online:
Em: Revista Brasileira de Plantas Medicinais (Brazil) v. (2)1 p. 43-47; (1999)Sumário:
RESUMO:
A separação de flavoróides e naftopiranonas presentes em extratos polares dós capilulos
de sempre’vrvas brasileiras loi obtida através da cromatogcafia em contracorrente de gotejamenlo
seguida de cromatografias em coluna de PVP e Sephadex LH-20. As substâncias isoladas de extratos
etanólicos foram rdentificadas por técnicas espectrométncas e comparadas com dados da literatura
Este procedimento levou ao isolamento e idontrficaçào da 9’Gp-D’glcopiranosilpaepalaniina (1J.9-
0-p-D-glicopiranosil(1 —Mjfalopiranosilpaepalanhna (2), além dos flavonóides B-metoxicanferol (3).
3-0-P-D-glicopirano5il-6-meloxicanferol (4), paluletina (5). 3-O-P-D-rutínosilpaluletina (6). 7-O-J3-
D-glicopiranosilquercetagetina (7), 5,7É4-1riidfoxi-6,3'-dimeloxiflavona (8) e 5,7.4*4riidraxi-6.3'-
dímetoxrllavonoi (9).
Palavras-chave: Paepalanthus, Eriocautacoae, DCCC, flavonoids, naphthopyrones.Sumário:
ABSTRACT:
Separation of Flavonoids and Naphthopyrones from four Brazilian
Paepalanthus Species by Droplet Countercurrent Chromatography. A general procedure
was developed for the simultaneous separation of flavonoids and naphthopyrones from the polar
extracts ol the capitula Irom Brazilian everlasting plants is described The ethanolic extracts of several
species from the Paepa/an/hus genus (Enocaulaceae) were fractionated by droplet countercurrent
chromatography followed by column chromatography on pvp and sephadex LH-20 The isolated
compounds were identified by spectrometric analysis and comparison with literature data. This
approach led to the isolation of 9-O-P-D-giucopyranosylpaepalantine (1), 9-O-p-D-glucopyranosyl
(1 —>6)allopyranosylpaepalantine (2). along with the flavonoids 6-methoxykaempferol (3).
3-Op’Dglucopyranosyl-6-methoxykaempferol {4), palulelin (5). 3-Op-D-rijlinosylpatulelrn (6),
7-O-p-Dglucopyranosylquercelagetin (7), 5(7,4'-tnhydroxy’6,3'’dinne1hoKyflavone (8) and
5,7r4'-trihydroxy-6,3'- dimethoxyflavonol (9)
Keywords Paepalanthus, Enocaulaceae, DCCC, flavonoids, naphthopyrones.
| Tipo de material | Biblioteca atual | Coleção | Número de chamada | Informaçaõ do volume | Situação | Devolução em | Código de barras |
|---|---|---|---|---|---|---|---|
Periódicos
|
Biblioteca Nacional de Agricultura - Binagri | Periódicos agrícolas | 1998 1(1); 1999 1(2), 2(1) | Consulta local | 2023-29681 |
Publicação on-line; 13 ref.; 1 table; 3 illus.; Summaries (En, Pt)
RESUMO:
A separação de flavoróides e naftopiranonas presentes em extratos polares dós capilulos
de sempre’vrvas brasileiras loi obtida através da cromatogcafia em contracorrente de gotejamenlo
seguida de cromatografias em coluna de PVP e Sephadex LH-20. As substâncias isoladas de extratos
etanólicos foram rdentificadas por técnicas espectrométncas e comparadas com dados da literatura
Este procedimento levou ao isolamento e idontrficaçào da 9’Gp-D’glcopiranosilpaepalaniina (1J.9-
0-p-D-glicopiranosil(1 —Mjfalopiranosilpaepalanhna (2), além dos flavonóides B-metoxicanferol (3).
3-0-P-D-glicopirano5il-6-meloxicanferol (4), paluletina (5). 3-O-P-D-rutínosilpaluletina (6). 7-O-J3-
D-glicopiranosilquercetagetina (7), 5,7É4-1riidfoxi-6,3'-dimeloxiflavona (8) e 5,7.4*4riidraxi-6.3'-
dímetoxrllavonoi (9).
Palavras-chave: Paepalanthus, Eriocautacoae, DCCC, flavonoids, naphthopyrones.
ABSTRACT:
Separation of Flavonoids and Naphthopyrones from four Brazilian
Paepalanthus Species by Droplet Countercurrent Chromatography. A general procedure
was developed for the simultaneous separation of flavonoids and naphthopyrones from the polar
extracts ol the capitula Irom Brazilian everlasting plants is described The ethanolic extracts of several
species from the Paepa/an/hus genus (Enocaulaceae) were fractionated by droplet countercurrent
chromatography followed by column chromatography on pvp and sephadex LH-20 The isolated
compounds were identified by spectrometric analysis and comparison with literature data. This
approach led to the isolation of 9-O-P-D-giucopyranosylpaepalantine (1), 9-O-p-D-glucopyranosyl
(1 —>6)allopyranosylpaepalantine (2). along with the flavonoids 6-methoxykaempferol (3).
3-Op’Dglucopyranosyl-6-methoxykaempferol {4), palulelin (5). 3-Op-D-rijlinosylpatulelrn (6),
7-O-p-Dglucopyranosylquercelagetin (7), 5(7,4'-tnhydroxy’6,3'’dinne1hoKyflavone (8) and
5,7r4'-trihydroxy-6,3'- dimethoxyflavonol (9)
Keywords Paepalanthus, Enocaulaceae, DCCC, flavonoids, naphthopyrones.
BINAGRI