Natural glycosidic antioxidants from Cynanchum atratum roots.
Carbohydr Res
; 523: 108729, 2023 Jan.
Article
en En
| MEDLINE
| ID: mdl-36535216
ABSTRACT
Two new rhamnosides, 18-O-α-l-rhamnopyranosylabietic acid (1) and (E)-3,5-dimethoxystilben-4'-O-α-l-rhamnopyranoside (2), five known glucosides (3-7) along with three others were isolated from Cynanchum atratum roots. The structures of new compounds were elucidated by physical data analyses such as NMR, UV, IR, HR-ESI-MS, as well as acid hydrolysis. All of them were assessed for their antioxidant activities through 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) radical ion (ABTSâ¢+), 1,1-diphenyl-2-picryl-hydrazyl radical (DPPHâ¢) and 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide radical (PTIOâ¢) assay, with l-ascorbic acid used as the positive control. As a result, compounds 3-5 exhibited obvious antioxidant activities. These bioactive components could be promising antioxidants.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Vincetoxicum
/
Antioxidantes
Idioma:
En
Revista:
Carbohydr Res
Año:
2023
Tipo del documento:
Article
País de afiliación:
China