Tetrahydroquinoline is one of the most important simple nitrogen heterocycles, widely found in nature and in a variety of pharmacologically active compounds. Tetrahydroquinoline is an important structure for the synthesis of various biologically active derivatives.
Quinolines are an important class of biologically active heterocyclic compounds, and their derivatives usually exhibit a variety of biological activities. They can be used as antimalarial drugs and in the preparation of other antimalarial drugs. Other important activities of quinoline derivatives include inhibitory activity against EGFR-TK and antipsychotic activity. Futhermore, quinoline scaffolds are present in various drug molecules, including the antimalarial drugs aablaquine, chloroquine, mefloquine and primaquine, and the antibacterial agents gatifloxacin, levofloxacin, and moxifloxacin.