title: Alkaloids from Corydalis bulbosa.
abstract: 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, oxonantenine, (+)-isoboldine and nandazurine. Glaucine and thaliporphine were detected by means of thin-layer chromatography. In addition, one minor alkaloid Cb-4, uncompletely identified, was described. The spectral data of corydione, predicentrine and nandazurine are given.
authors.affiliation: Department of Chemistry, High Medical Institute, Plovdiv, Bulgaria.
authors.forename: H G
authors.initials: HG
authors.lastname: Kiryakov
authors.forename: E
authors.initials: E
authors.lastname: Iskrenova
authors.forename: B
authors.initials: B
authors.lastname: Kuzmanov
authors.forename: L
authors.initials: L
authors.lastname: Evstatieva