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Anti-inflammatory labdane diterpenoids from Leonurus japonicus Houtt.
- Source :
-
Phytochemistry . May2020, Vol. 173, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- Seven undescribed labdane diterpenoids, japonicones A-G, were isolated from the aerial parts of Leonurus japonicus Houtt. Japonicones C-G contained two keto carbonyl groups in their structures attached to C-3 and C-7, which are rare for labdane diterpenoids. The structures and absolute configurations of japonicones A-G were established by means of spectroscopic analyses (HRESIMS, 1D and 2D NMR, and ECD). Their anti-inflammatory activities were evaluated by measuring their inhibitory effects on PGE 2 production in LPS-stimulated RAW264.7 macrophages. Japonicones A-D and G showed inhibition of PGE 2 production with IC 50 values in the range of 8.62–30.71 μ M (the positive control paracetamol showed an IC 50 = 5.79 μ M). Image 1 • Seven undescribed labdane diterpenoids were isolated from the aerial parts of Leonurus japonicus Houtt. • Their structures and absolute configurations were established by means of spectroscopic analyses. • Compounds 1 − 4 , and 7 showed inhibition of PGE 2 production with IC 50 values in the range of 8.62−30.71 μ M. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DITERPENES
*CARBONYL group
*ANTI-inflammatory agents
Subjects
Details
- Language :
- English
- ISSN :
- 00319422
- Volume :
- 173
- Database :
- Academic Search Index
- Journal :
- Phytochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 142462321
- Full Text :
- https://doi.org/10.1016/j.phytochem.2019.112223