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    Benzodiazepine analogues. Part 18—13C NMR analysis of Schmidt rearrangement products from flavonone analogues
    Magnetic Resonance in Chemistry (1998)
    Malose J. MphahlelePerry T. Kaye
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    Abstract:
    13C NMR spectra of 1,4- and 1,5-benzoheterazepinones and their tetrazolo derivatives, prepared by the Schmidt rearrangement of flavanone analogues, are reported. The effects of the C-ring heteroatoms on the 13C NMR chemical shifts of the ring-expanded products were found to be of diagnostic value in distinguishing the isomeric products from one another and from the corresponding precursors. © 1998 John Wiley & Sons, Ltd.
    Keywords:
    Heteroatom
    Flavanone
    Chemical shift
    Topics:
    Synthesis and pharmacology of benzodiazepine derivatives
    Synthesis of Tetrazole Derivatives
    Synthesis and biological activity
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