New obovatol trimeric neolignans with NO inhibitory activity from the leaves of Magnolia officinalis var. biloba.
Bioorg Chem
; 96: 103586, 2020 03.
Article
en En
| MEDLINE
| ID: mdl-31982819
ABSTRACT
Six new obovatol trimeric neolignans, houpulignans A-F (1-6) were isolated from the leaves of Magnolia officinalis var. biloba. Their structures were determined on the basis of the interpretation of HRESIMS, NMR data, and electronic circular dichroism (ECD) calculations. Compounds 1 and 2 are the first examples of neolignans derived from three units of obovatol bearing a rare 1,4-benzodioxepane moiety. Compound 3 possesses a benzodihydropyran ring, meanwhile three units of obovatol in 4-6 are connected by an alkyl chain. Compounds 1-3 inhibited NO production in LPS-stimulated RAW264.7 cells with IC50 values of 8.01, 20.21, and 4.05 µM, respectively.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Éteres Fenílicos
/
Compuestos de Bifenilo
/
Lignanos
/
Magnolia
/
Óxido Nítrico
Idioma:
En
Revista:
Bioorg Chem
Año:
2020
Tipo del documento:
Article