Cytotoxic clerodane diterpenoids from the roots of Casearia barteri Mast.
Georges Bellier TabekouengFranck Armand Fomo FozingEduard Mas-ClaretMoses K LangatMarcel FreseAchille Nouga BissoueJean Duplex WansiAlain François Kamdem WaffoNorbert SewaldBruno Ndjakou LentaPublished in: RSC advances (2024)
A study of diterpenoids as active ingredients against cancer from the active roots extract of Casearia barteri Mast. (IC 50 = 1.57 μg mL -1 ) led to the isolation of six new clerodane diterpenoids, named as barterins A-F (1-6) alongside seven known compounds, caseamembrin A, caseamembrin E, casearlucin A, graveospene G, N-trans -feruloyltyramine, N-cis -feruloytyramine and sitosterol-3- O -β- D -(6- O -palmitoyl)-glucopyranoside. Their structures were elucidated based on NMR spectroscopic data and mass spectrometry. The absolute configurations of 1-6 were established by the time-dependent density functional theory (TDDFT), electronic circular dichroism (ECD) calculations and experimental data analysis. The cytotoxic effects of compounds 1-6 were evaluated against a human cervix carcinoma cell line KB -3-1. Barterins A-D (1-4) showed cytotoxic effects against the KB -3-1 cell line with IC 50 values ranging from 1.34-4.73 μM.
Keyphrases
- density functional theory
- data analysis
- molecular dynamics
- high resolution
- mass spectrometry
- endothelial cells
- papillary thyroid
- magnetic resonance
- oxidative stress
- molecular docking
- liquid chromatography
- electronic health record
- preterm birth
- big data
- induced pluripotent stem cells
- squamous cell
- squamous cell carcinoma
- gas chromatography
- molecular dynamics simulations
- arabidopsis thaliana