1H NMR Spectroscopy of pyrrolizidine alkaloids |
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| Authors: | HJ Segall JL Dallas |
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| Institution: | 1. Department of Veterinary Pharmacology and Toxicology University of California, Davis, CA 95616, U.S.A.;2. Department of Biological Chemistry, University of California, Davis, CA 95616, U.S.A. |
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| Abstract: | The 1H NMR spectra of three pyrrolizidine alkaloids of the macrocyclic diester type, retrorsine, seneciphylline and senecionine, plus their three N-oxides have been assigned. Previous 1H NMR studies of these pyrrolizidine alkaloids have stressed the difficulties of spectral intrepretation. The results reported here will provide a useful resource for analysis of tertiary structure in these and related compounds. |
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| Keywords: | Compositae groundsel pyrrolizidine alkaloid retrorsine seneciphylline senecionine |
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