NMR Characterization of 7-oxo-aporphine Alkaloids
7-氧代阿朴菲型生物碱的NMR研究

Aporphine alkaloids found in plants have good antihypertensive and antibacterial activities. In this study, three 7-oxo-aporphine alkaloids were isolated from Liriodendron Chinese and characterized by 1H and 13C NMR and 2D NMR techniques (including 1H-1H COSY, HSQC, HMBC and NOESY). The chemical shifts of the three compounds were assigned. Assignment mistakes found in the literature were corrected.