SYNTHESIS AND BIOLOGICAL EVALUATION OF SOME NOVEL HETEROCYCLES DERIVED FROM 2-ARYLIDENE-1-TETRALONES
About Authors:
Roshni Patel*, Prof. Arun Parikh, Prof. Vijayalakshmi Gudaparthi
Department of Pharmaceutical Chemistry, L.J.Institute of Pharmacy,
S.G.Highway, Ahmedabad-382210
*roshanimpharm@gmail.com
ABSTRACT
Medicinal chemistry involves chemical aspects of identification, and then systematic, thorough synthetic alteration of new chemical entities to make them suitable for therapeutic use. Indazoles have an important role in medicinal chemistry. Indazole nucleus is an important class of nitrogen containing heterocyclic widely used as key building block for the synthesis of various pharmaceutically important agents. Indazole possess wide range of biological activities such as bactericidal, fungicidal, analgesic, antihypertensive, anti-inflammatory and antitumor. In the present study we have synthesized some novel 3,3a,4,5-tetrahydro-2-(substituted benzenesulphonyl)-3-(substituted phenyl)-2H-benzo[g]indazoles, by condensation of 1-tetralone with different substituted aromatic aldehydes and the resulted 2-(substituted benzylidene)-3,4,-dihydronaphtalen-1-ones on reaction with hydrazine hydrate in methanol followed by treatment with different substituted sulfonyl chlorides in pyridine gave the titled compounds.The synthesized compounds were characterized by IR, NMR and Mass spectral analysis. All newly synthesized derivatives were evaluated for antibacterial activity against gram + ve and gram-ve bacteria B.cereus, S.aureus and E.coli respectivelyand antifungal activity againstC.albicans and all the synthesized compounds showed significant antibacterial and antifungal activity.