Carbazoles are an important class of nitrogen-containing heterocycles with a planar tricyclic skeleton consisting of two benzene rings fused on both sides of the central pyrrole ring, with a large aromatic system and a central nitrogen atom, showing broad of electron delocalization. The structure of this compound is based on the indole structure, but in which a second benzene ring is fused to a five-membered ring at positions 2-3 of the indole. Carbazole structural motifs are widely found in, but not limited to, a large number of natural alkaloids of plant or bacterial origin. Since many of these alkaloids are medically useful, exhibit a fairly wide range of biological activities (anticancer, anti-HIV, antibacterial, anti-Alzheimer's disease, anticoagulant, analgesic, antiepileptic, antidiabetic, antioxidant, etc.). Medicinal chemistry also uses carbazole motifs in synthetic drugs to combat hypertension, heart disease, and hepatitis C virus replication.