Effect of Substituents on the Biological Activity of Isatin Hybrids – A SAR Study

ABSTRACT: Isatin (2,3-dioxindole) is a benzopyrrole derivative that belongs to a large class of heterocyclic chemicals. Isatin derivatives are essential synthetic substrates that can be utilized as starting materials to build a wide range of heterocycles with diverse applications in pharmaceutical sciences. Isatin derivatives therefore have recently gained a lot of attention. This review emphasizes on the Schiff base derivatives from isatin, isatin quinoline/flouroquinone, isatin -thiazole, isatin–azole hybrids, all possessing potential biological activity. The structure–activity relationships of these potential leads are also discussed