Pseudoamaolides A-O, anti-inflammatory triterpene spiroketal lactones from seeds of Pseudolarix amabilis.
Bioorg Chem
; 129: 106180, 2022 Dec.
Article
in En
| MEDLINE
| ID: mdl-36208500
ABSTRACT
Fifteen new triterpenoids (1-15), along with twenty known ones (16-35), were isolated from Pseudolarix amabilis. The triterpenoid structures include multiple skeleton types, such as 2,3-seco-cycloartane, 3,4-seco-cycloartane, 3,49,10-diseco-cycloartane, and 3,48,99,10-triseco-cycloartane, as elucidated by extensive spectroscopy (1D NMR, 2D NMR, HRESIMS, and IR) and single-crystal X-ray diffraction. The anti-inflammatory activities of compounds 1-35 were evaluated. Compounds 3, 11, 16, 24, 25, and 26 suppressed the transcription of the NF-κB-dependent reporter gene in LPS-induced 293T/NF-κB-Luc cells with IC50 values of 0.12, 0.10, 0.30, 0.09, 0.49, and 0.35 µM, respectively. In addition, compound 16 showed anti-inflammatory activity against xylene-induced ear swelling in vivo with an inhibition rate of 44.7 % (30 mg/kg). Compound 16 significantly improved the disease activity index (DAI) of ulcerative colitis at a dose of 400 mg/kg in a dextran sodium sulfate (DSS)-induced mouse model of experimental ulcerative colitis (P < 0.01).
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Triterpenes
/
Colitis, Ulcerative
/
Pinaceae
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Bioorg Chem
Year:
2022
Document type:
Article
Publication country:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA