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Proton nmr spectroscopy of pyrrolizidine alkaloids

Proton nmr spectroscopy of pyrrolizidine alkaloids

Phytochemistry (Oxford) 22(5): 1271-1274

The 1H NMR spectra of 3 pyrrolizidine alkaloids [of Senecio vulgaris] of the macrocyclic diester type, retrorsine, seneciphylline and senecionine, plus their 3 N-oxides were assigned. Previous 1H NMR studies of these pyrrolizidine alkaloids stressed the difficulties of spectral intrepretation. The results provide a useful resource for analysis of tertiary structure in these and related compounds.

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Accession: 006215867

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DOI: 10.1016/0031-9422(94)85006-2

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