6533b7d1fe1ef96bd125c201
RESEARCH PRODUCT
Activity of lupane triterpenoids from Maytenus species as inhibitors of nitric oxide and prostaglandin E2
Jérôme BusserollesIgnacio A. JiménezIsabel L. BazzocchiCarolina P. ReyesMaría José AlcarazMarvin J. Núñezsubject
StereochemistryClinical BiochemistryPharmaceutical SciencePharmacognosyNitric OxideBiochemistryDinoprostoneTerpeneCelastraceaeMiceStructure-Activity Relationshipchemistry.chemical_compoundTriterpeneDrug DiscoveryAnimalsMolecular Biologychemistry.chemical_classificationBetulinbiologyMaytenusMacrophagesSpectrum AnalysisOrganic ChemistryBiological activityBacterial InfectionsMaytenusbiology.organism_classificationAntineoplastic Agents PhytogenicTriterpenesTerpenoidEndotoxinsPlant LeaveschemistryMolecular Medicinedescription
In the present study, we report that three new lupane triterpenes (1-3), in addition to 16 known ones (4-19), were isolated from the root bark of Maytenus cuzcoina and the leaves of Maytenus chiapensis. Their structures were elucidated by spectral analysis, including homonuclear and heteronuclear correlation NMR experiments (COSY, ROESY, HSQC, and HMBC). The natural compounds and derivatives 6a, 6b, 9a, and 9b have been tested for potential anti-inflammatory activity, and several compounds including 3-epicalenduladiol (2), 11alpha-hydroxy-glochidone (3), rigidenol (6), acetoxy-rigidenol (6a), 11alpha-acetoxy-30-chloro-3-oxo-lup-20(29)-ene (6b), betulin (9), 28-acetoxy-betulin (9a), epibetulin (12), epibetulinic acid (13), and betulonic acid (16) exhibited potent inhibitory effects on NO and prostaglandin E(2) production in mouse macrophages (RAW 264.7) stimulated with bacterial endotoxin. The structure-activity relationship is discussed in detail.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-04-08 | Bioorganic & Medicinal Chemistry |