6533b86ffe1ef96bd12cdbfa

RESEARCH PRODUCT

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subject

PharmacologyChromatographybiology010405 organic chemistryChemistryChemical structureOrganic ChemistryPharmaceutical ScienceIsoflavones010402 general chemistrybiology.organism_classification01 natural sciencesMass spectrometric0104 chemical sciencesAnalytical ChemistryMillettiachemistry.chemical_compoundChromatographic separationComplementary and alternative medicineDrug DiscoveryIc50 valuesMolecular MedicineCancer cell linesMedicinal plants

description

A new isoflavone, 8-prenylmilldrone (1), and four new rotenoids, oblarotenoids A–D (2–5), along with nine known compounds (6–14), were isolated from the CH2Cl2/CH3OH (1:1) extract of the leaves of Millettia oblata ssp. teitensis by chromatographic separation. The purified compounds were identified by NMR spectroscopic and mass spectrometric analyses, whereas the absolute configurations of the rotenoids were established on the basis of chiroptical data and in some cases by single-crystal X-ray crystallography. Maximaisoflavone J (11) and oblarotenoid C (4) showed weak activity against the human breast cancer cell line MDA-MB-231 with IC50 values of 33.3 and 93.8 μM, respectively.