抄録
A quaternary alkaloid magnoflorine (I) has been identified from the stem and root of Berberis amurensis Rupr. var. japonica (Regel) Rehd. forma Bretschneideri (Rehd.) Ohwi (Berberidaceae). The wide distribution of magnoflorine (I) throughout the families Magnoliaceae (M.grandiflora L.), Menispermaceae (Cocculus trilobus DC.), and Berberidaceae (B.amurensis) is of significance in biogenesis of alkaloids.