Search results for "Dextrorotatory"

showing 3 items of 3 documents

Labdane Diterpenes from Stachys plumosa

2000

Three new labdane diterpenoids were isolated from the aerial parts of Stachys plumosa. The first two (1, 2) were the dextrorotatory enantiomers of the known 6-deoxyandalusol and 13-epijabugodiol. Structures were determined using NMR and MS techniques. The absolute stereochemistry of the third compound (3) was not experimentally proved.

Chromatography GasMagnetic Resonance SpectroscopyOptical RotationStereochemistryPharmaceutical ScienceGas Chromatography-Mass SpectrometryAnalytical ChemistryDextrorotatoryLabdanechemistry.chemical_compoundBalkan peninsulaDrug DiscoveryOrganic chemistryPharmacologyLamiaceaePlant StemsChemistryOrganic ChemistryAbsolute configurationStachys plumosaTerpenoidPlant LeavesItalyComplementary and alternative medicineChromatography GelMolecular MedicineSpectrophotometry UltravioletEpimerDiterpenesDiterpeneJournal of Natural Products
researchProduct

Assignment of the Absolute Configuration and Total Synthesis of (+)-Caripyrin

2014

The antifungal secondary metabolite (+)-caripyrin was studied by vibrational circular dichroism spectroscopy. Analysis of the recorded data, with the Boltzmann weighted-average of the spectra calculated at the B3LYP/6-311G(d,p) level of theory for all relevant conformers, unequivocally proved the (R,R)-configuration for the dextrorotatory natural product. Based on this finding, a short enantioselective synthesis of (+)-caripyrin was developed.

StereochemistryChemistryOrganic ChemistryVibrational circular dichroismEnantioselective synthesisAbsolute configurationInfrared spectroscopyTotal synthesisPhysical chemistryPhysical and Theoretical ChemistrySpectroscopyConformational isomerismDextrorotatoryEuropean Journal of Organic Chemistry
researchProduct

ChemInform Abstract: Assignment of the Absolute Configuration and Total Synthesis of (+)-Caripyrin.

2015

The antifungal secondary metabolite (+)-caripyrin was studied by vibrational circular dichroism spectroscopy. Analysis of the recorded data, with the Boltzmann weighted-average of the spectra calculated at the B3LYP/6-311G(d,p) level of theory for all relevant conformers, unequivocally proved the (R,R)-configuration for the dextrorotatory natural product. Based on this finding, a short enantioselective synthesis of (+)-caripyrin was developed.

symbols.namesakeComputational chemistryChemistryBoltzmann constantVibrational circular dichroismAbsolute configurationEnantioselective synthesissymbolsTotal synthesisGeneral MedicineSpectroscopyConformational isomerismDextrorotatoryChemInform
researchProduct