Carbon-13 and proton NMR studies of 1,4-benzodiazepines |
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Authors: | R. Haran J. P. Tuchagues |
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Abstract: | One bond and long range 1H-1H, 1H-19F, 13C-1H and 13C-19F coupling constants for six 1,4-benzodiazepines are described. An unambiguous assignment of their carbon-13 resonances is carried out based on chemical shift theory and on the analysis of the fine splittings caused by one bond and long range couplings. Chemical shift and coupling constant values are reported for diazepam, chlordiazepoxide, oxazepam, nitrazepam, chlonazepam and flunitrazepam. |
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