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RESEARCH PRODUCT

1H and13C NMR assignments and conformational analysis of some podocarpene derivatives

Ramón J. ZaragozáM. Luisa MarinManuel ArnóMiguel A. González

subject

Computational chemistryChemistryCarbon-13 NMR satelliteProton NMRGeneral Materials ScienceTransverse relaxation-optimized spectroscopyGeneral ChemistryFluorine-19 NMRNuclear magnetic resonance spectroscopyDEPTCarbon-13 NMRConformational isomerism

description

This paper reports on the assignment of the 1 Ha nd 13 C NMR spectra of five podocarpene derivatives. Resonance assignments were made on the basis of one- and two-dimensional NMR techniques which included 1 H, 13 C, DEPT and HMQC and also 1D NOE difference spectroscopy. The ratio of the different conformers in the six- membered C-ring of the podocarpene system was determined by molecular mechanics calculations and analysis of proton spin-spin coupling constants. Copyright © 2000 John Wiley & Sons, Ltd.

https://doi.org/10.1002/1097-458x(200012)38:12<1019::aid-mrc781>3.0.co;2-f