1. Department of Chemistry and Centre for Advanced Studies, Panjab University, Chandigarh 160 014, India
2. Division of Medicinal Chemistry, CSIR-Institute of Microbial Technology, Chandigarh 160 036, India
3. Mehr Chand Mahajan DAV College for Women, Sector 36, Chandigarh 160 036, India
4. National Interdisciplinary Centre of Vaccines, Immunotherapeutics and Antimicrobials, Panjab University, Chandigarh 160 014, India