抄録
Among the bases known to be present in the tree bark of Nandina domestaca THUNB., structure of nandazurine3-5) and a tertiary phenolic base5) is still unknown. This was examined in the present work and nandazurine was c1arified as an oxoaporphine-type base having a zwitterion structure (I), from its chemical reactions and spectral data. This base is also obtained by the oxidation of O-methyldomesticine (IV) or domesticine (III), which are the main bases of this plant. The phenolic base melting at above 200° was proved to be sinoacutina (VII) belonging to the morphinandienone-type base.
