Tetracyclic benzocarbazoles are examples of nitrogen-containing
heterocycles, which display interesting pharmacological activities and physicochemical
properties. This chapter aims to bring some examples about the synthesis of
bezocarbazoles, mostly benzo[a]carbazoles (including the dihydro and tetrahydro
derivatives), with interesting properties. This chapter also includes aza-pterocarpans
and aza-coumestans, which are structurally similar to benzo [a] carbazoles, although
their analogous natural products are formed through different biosynthetic pathways.
Being aware of the potential interest of these compounds, many efforts have been made
for the development of new methodologies to carry out their synthesis and will be
discussed below.
Keywords: Azaarylation, Aza-coumestans, Aza-pterocarpans, Azaspirodecanes,
Benzocarbazoles, Chromanones, Chromene, Dihydronaphtalene, Fischer indol,
Harmicine, Indole, N-tert-butanesulfinyl imine, Tetralone.
