A new dehydroaporphine alkaloid from Papaver fugax.

A new dehydroaporphine alkaloid (-)-6a,7-dehydrofloripavidine has been isolated from the aerial parts of Papaver fugax Poir. (Papaveraceae) collected from Erzurum (Eastern Anatolia). (-)-Floripavidine (aporphine) and (-)-mecambrine (proaporphine) were isolated as major alkaloids. Other bases present were (+)-salutaridine (promorphinane) and argentinine (phenanthrene). The presence of argentinine has been shown for the first time in the Papaveraceae.