A new 4,5-dioxoaporphine, named corydione, was isolated from the whole herb of Corydalis bulbosa (L.) Dc (Papaveraceae), together with dehydronantenine, (-)-stylopine, (+)-bicuculline, (-)-adlumidine, (+)-nantenine, (+)-bulbocapnine, protopine (-)-domesticine, (+)-corydine, predicentrine,
In the course of screening plants used in Danish folk medicine as memory enhancers, a crude methanolic extract of tubers from Corydalis cava showed significant acetylcholinesterase inhibitory activity in a dose-dependent manner. Activity guided fractionation of the methanolic extract resulted in the
The known alkaloids (+/-)-stylopine, (+/-)-sinactine, protopine, (+)-bulbocapnine, (-)-domesticine, (+)-corydine and (+)-isoboldine were found in the mixture of alkaloids from Corydalis marschalliana (Papaveraceae), growing in Bulgaria. The alkaloids dehydronantenine, (+)-nantenine and oxonantenine
The known alkaloids (-)-stylopine, (-)-canadine, (+/-)-sinactine, (+)-nantenine, (+)-bulbocapnine, protopine, (-)-isocorydine, (-)-domesticine, alpha-allocryptopine and berberine were found in a mixture of alkaloids from Corydalis slivenensis (Papaveraceae), growing in Bulgaria. Dehydronantenine,
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