Iridoids and an Alkaloid from Oxera morieri1.

A novel monoterpene alkaloid, oxerine, has been isolated from the aerial parts of OXERA MORIERI. Its structure 7 has been elucidated on the basis of its spectral data and its sterochemistry established by its synthesis, using harpagide as starting material. Five iridoids and verbascoside have also been isolated from the plant material.

[Alkaloids and flavonoid from aerial parts of Hammada articulata ssp. scoparia]. / Alcaloïdes et flavonoïde des parties aériennes de Hammada articulata ssp. scoparia.

Two alkaloids (N-methylisosalsoline and carnegine) had been previously described from the aerial parts of Hammada articulata ssp. scoparia. A thorough study of this plant material has now led to the isolation of eight minor alkaloids and one flavonoid. The alkaloids include four isoquinolines (isosalsoline, salsolidine, dehydrosalsolidine and isosalsolidine), one isoquinolone (N-methylcorydaldine), tryptamine, N-omega-methyltryptamine and one beta-carboline (tetrahydroharman). The flavonoid has been identified as isorhamnetin-3-O-beta-D-robinobioside. The structures have been elucidated on the basis of spectral data, mainly mass spectrometry (D-IC) and 1H NMR.