Summary
Besides 1–methylenepyrrolizidine, which is reported from Australian C. anagyroides, the authors have isolated senecionine from introduced Indian C. anagyroides. The main liquid alkaloid obtained from the crude base by distillation at 72–75°/36
mm. gave empirical formula C8H13N, picrate, m. p. 210–213° and picrolonate m. p. 172–173°. These characters as well
as its IR and NMR show that it is identical with 1–methylenepyrrolizidine isolated
by Culvenor and Smith (1959) from an Australian C. anagyroides. A solid base, empirical formula C18H25NO5 m. p. 232–235° (decomp.), picrate m. p. 187–188°, methiodide m. p. 242–243° (decomp.)
and nitrate m. p. 212–213° (decomp.) was also isolated. These characters as well as
its IR show that it is indentical with senecionine, which is known to occur in C. juncea, Executes quadridentata and many Senecio species.
Zusammenfassung
In Crotalaria anagyroides (Leguminosae) wurde Senecionin nachgewiesen.
