Alkaloids of Arundo donax VII. a spectroscopic and X-ray structural investigation of arundinine - a new dimeric alkaloid from the epigeal part of Arundo donax

摘要

From Arundo donax L. we have isolated the new dimeric alkaloid arundinine, with the composition C_(23)H_(28)N_4O, the structure of which has been established on the basis of its physicochemical characteristics and ~1H and ~(13)C NMR spectroscopy, including 1D and 2D experiments in both homo- and heteronuclear regimes. The proposed structure - 3a-(3'-dimethylaminoethylindol-5'-yloxy)-1-methylpyrrolidino[1a,3a - b]indoline - has been confirmed by x-ray structural analysis (XSA).