Phenolic glycosides from berries of Pimenta dioica.
J Nat Prod
; 71(5): 861-5, 2008 May.
Article
in En
| MEDLINE
| ID: mdl-18314960
ABSTRACT
Four new phenolic glycosides, (2-hydroxy-3-methoxy-5-allyl)phenyl beta- d-(6-O-E-sinapoyl)glucopyranoside (1), (1' R,5' R)-5-(5-carboxymethyl-2-oxocyclopentyl)-3 Z-pentenyl beta-D-(6-O-galloyl)glucopyranoside (2), (S)-alpha-terpinyl [alpha-L-(2-O-galloyl)arabinofuranosyl]-(1-->6)-beta-D-glucopyranoside (3), and (R)-alpha-terpinyl [alpha-L-(2-O-galloyl)arabinofuranosyl]-(1-->6)-beta-D-glucopyranoside (4), were isolated from the berries of Pimenta dioica together with eight known flavonoids. The structures of 1-4 were elucidated on the basis of MS and NMR data and enzymatic hydrolysis. All four glycosides showed radical-scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phenols
/
Plants, Medicinal
/
Pimenta
/
Glycosides
Country/Region as subject:
Caribe ingles
/
Jamaica
Language:
En
Journal:
J Nat Prod
Year:
2008
Document type:
Article
Affiliation country:
Japón