1.
Magn Reson Chem
; 52(5): 251-7, 2014 May.
Artigo
em Inglês
| MEDLINE
| ID: mdl-24574143
RESUMO
Chemical investigation of the aerial parts of Senecio polypodioides lead to the isolation of the new eudesmanoid 1ß-angeloyloxyeudesm-7-ene-4ß,9α-diol (1) and the known dirhamnosyl flavonoid lespidin (3), while from roots, the known 7ß-angeloyloxy-1-methylene-8α-pyrrolizidine (5) and sarracine N-oxide (6), as well as the new neosarracine N-oxide (8), were obtained. The structure of 1 and 8 was elucidated by spectral means. Complete assignments of the (1)H NMR data for 5, 6, sarracine (7), and 8 were made using one-dimensional and two-dimensional NMR experiments and by application of the iterative full spin analysis of the PERCH NMR software.