Asian Journal of Research in Chemistry

It is a branch of chemistry dealing with the synthesis, properties and applications of this heterocycles. Its play a very important role in nature and in chemical synthesis as well. Heterocyclic chemistry deals with heterocyclic compounds which constitute about sixty-five percent of organic chemistry literature. A heterocyclic compound or rings structure is a cyclic compound contain atom of at least two different elements as a member of its ring. In nature N, O, S, containing heterocyclic molecule can be found in every living being. A heterocyclic compound or ring structure is a cyclic compound that has atoms of at least two different elements as members of its ring(s). Examples of heterocyclic compounds include all of the nucleic acids, the majority of drugs, most biomass (cellulose and related materials), and many natural and synthetic dyes. More than half of known compounds are heterocycles. 59% of US FDA-approved drugs contain nitrogen heterocycles.