1. Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700 032, India
2. Department of Chemistry, Prabhat Kumar College, Purba Medinipur 721404, West Bengal, India
3. Department of Chemistry, Howard University, 525 College Street, Washington, D.C., District of Columbia 20059, United States
4. Department of Chemistry, The Bhawanipur Education Society College, 5, Lala Lajpat Rai Sarani, Kolkata 700020, India