A highly chem-and regioselective synthesis of diversely substituted benzo[a]carbazoles and indolo[2,1-a]isoquinoline......

Two new indole alkaloids, 4-oxo-4,12-dihydroindolo[2,3-a]quinolizine-3-carbaldehyde (1) and 1,6,7-trihydro-indolo- [2,3-......