SYNTHESIS, SPECTRAL STUDIES, AND ANTIMICROBIAL ACTIVITIES OF [N-(UN)ALKYLATED-2-ARYLINDOL-3-YL]THIOCARBOXAMIDES

Abstract

A series of [N-(un)alkylated-2-arylindol-3-yl]thiocarboxamides(6) have been synthesized by the condensation of alkyl [N-(un)alkylated-2-arylindol-3-yl]dithiocarboxylates (5) with appropriate secondary amines in absolute alcohol. Compound 5 was prepared by the reaction of N-(un)alkylated-2-arylindoles with carbon disulphide in the presence of potassium-t-butoxide followed by alkyl iodide under nitrogen atmosphere. All of the compounds have been characterized on the basis of their elemental and spectral data and have been screened for their antibacterial and antifungal activities. Some of the synthesized compounds have shown promising activity.

Keywords:

• 2-Arylindoles
• antimicrobial activity
• PTC
• thiocarboxylate
• thiocarboxamide

ACKNOWLEDGEMENT

The authors would like to thank the head of the Department of Chemistry, University of Rajasthan, Jaipur for providing necessary facilities, Dr. V. J. Ram, Dy. Director (retd.) and Emeritus Scientist CDRI, Lucknow for valuable suggestions and for the help offered in obtaining the various spectra, and CSIR (New Delhi) for the award of Senior Research Fellowship to N. Gupta.