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
Bioassay-directed fractionation of the stems of Rollinia mucosa led to the isolation of new N-methoxycarbonyl aporphine alkaloids, romucosine A (1), romucosine B (2), romucosine C (3), and romucosine D (4), along with the known alkaloid, N-methoxylcarbonyl-nornuciferine (5). Alkaloids 1 and 4