Further sesquiterpenoids from Pittosporum qinlingense and their anti-inflammatory activity.
Fitoterapia
; 162: 105292, 2022 Oct.
Article
em En
| MEDLINE
| ID: mdl-36064153
ABSTRACT
Four new sesquiterpenoid glycoside esters, Pitqinlingoside N-Q (1-4), together with eleven known metabolites (5-15), were isolated from 95% EtOH extract of the twigs, fruits and leaves of P. qinlingense. The structures of new compounds were elucidated on the basis of extensive spectroscopic analyses, including IR, UV, HRMS, NMR and electronic circular dichroism spectra. Unusal glycoside esters are characterized by the presence of polyacylated ß-D-fucopyranosyl and ß-d-glucopyranosyl units. Pitqinlingoside N (1), O (2), P (3), boscialin (5) and arvoside C (6) showed significant nitric oxide production inhibition in lipopolysaccharide (LPS)-induced BV-2 microglial cells with IC50 values ranging from 1.58 to 28.74 µM. Structure-activity relationships of the isolated compounds are discussed.
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Base de dados:
MEDLINE
Assunto principal:
Sesquiterpenos
/
Rosales
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article