The first report on flavonoid isolation from Annona crassiflora Mart.
Nat Prod Res
; 28(11): 808-11, 2014.
Article
em En
| MEDLINE
| ID: mdl-24571732
Annona crassiflora, a native tree from Brazilian Cerrado, is reported to possess several ethnomedical uses. Here, we report the isolation and unambiguous characterisation of the flavonoids quercetin-3-O-ß-D-glucopyranosil(1 â 6)-O-α-L-arabinoside (1), known as peltatoside, kaempferol-3-O-ß-D-galactopyranoside (2), quercetin-3-O-ß-D-galactopyranoside (3), quercetin-3-O-ß-L-arabinopiranoside (4) and the ( - )-epicatechin (5) from the hydroalcoholic portion of the leaf ethanolic extract. Their structures were elucidated by using 1D and 2D NMR, ESI-MS, UV/Vis spectroscopy, optical rotation analysis and literature data comparison. The leaf ethanolic extract and its isolated compounds were evaluated by using antimicrobial, antioxidant and larvicidal assays, expressing antimicrobial and antioxidant activities. This is the first report on flavonoid isolation from A. crassiflora.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Quercetina
/
Flavonoides
/
Glicosídeos
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Nat Prod Res
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido