Tricyclic Azoloquinolines

There exist many types of azoloquinolines, and therefore it is necessary to define the objects of interest to be described in this review. The tricyclic azoloquinolines reviewed in this article have an azole ring fused to the benzene ring of quinoline (not isoquinoline derivatives) in positions / g, and h. This means that the benzene ring is between azole and pyridine rings, and all of them are ortho-peri condensed. The azole and benzene rings do not have a common heteroatom, and also a carbon... 

V. Milata of the Slovak Technical University, Bratislava, has covered tricyclic azoloquinolines. Although these compounds were only cited 57 times in Chemical Abstracts through 1976, there were 3000 citations in the twenty year period 1977 to 1996. 

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