1. Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824-1322, United States
2. Division of Molecular Synthesis & Drug Discovery, Centre of Bio-Medical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226 014, UP, India
3. Department of Applied Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow 226 025, UP, India