title: Tetrahydroprotoberberine and aporphine alkaloids from rollinia leptopetala.
abstract: Tetrahydrojatrorrhizine, discretamine, anonaine and roemerine were isolated from the roots of Rollinia leptopetala R. E. Fries. They were identified and characterized by nuclear magnetic resonance spectroscopy ( 1 H and 13 C) with the aid of two-dimensional techniques ( 1 H- 1 H COSY, HETCOR, HMQC and HMBC). With the exception of tetrahydrojatrorrhizine, the presence of these alkaloids in R. leptopetala has not been reported previously.
authors.forename: I M
authors.initials: IM
authors.lastname: Sette
authors.forename: E V
authors.initials: EV
authors.lastname: da-Cunha
authors.forename: J M
authors.initials: JM
authors.lastname: Barbosa-Filho
authors.forename: M S
authors.initials: MS
authors.lastname: da-Silva