Sesquiterpene Lactones with COX-2 Inhibition Activity from Artemisia lavandulaefolia.
Chem Biodivers
; 15(5): e1700548, 2018 May.
Article
em En
| MEDLINE
| ID: mdl-29542280
ABSTRACT
Two new sesquiterpene lactones, artelavanolides A (1) and B (2), and four known sesquiterpene lactones (3 - 6) were isolated from the leaves of Artemisia lavandulaefolia. Their structures were elucidated based on the analysis of spectroscopic data (1D, 2D-NMR and HR-ESI-MS). The absolute configuration of 1 was determined by the analysis of single-crystal X-ray diffraction data. Artelavanolide A (1) is a rare sesquiterpene lactone possessing an unusual skeleton with the linkage of Me(14)-C(1) that is probably formed through a rearrangement of the guaiane-type sesquiterpenoids. Artelavanolide B (2) is a new highly unsaturated guaianolide. Compounds 1 - 6 were tested for activities on the inhibition of COX-2 enzyme in vitro. All of compounds exhibited inhibitory activity against COX-2 with IC50 values ranging from 43.29 to 287.07 µm compared with the positive control, celecoxib (IC50 = 18.10 µm). Among them, 3 showed the best COX-2 inhibitory activity with an IC50 value of 43.29 µm.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sesquiterpenos
/
Artemisia
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Ciclo-Oxigenase 2
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Inibidores de Ciclo-Oxigenase 2
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Lactonas
Limite:
Humans
Idioma:
En
Revista:
Chem Biodivers
Assunto da revista:
BIOQUIMICA
/
QUIMICA
Ano de publicação:
2018
Tipo de documento:
Article