1. Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension; Sitapur Road Uttar Pradesh Lucknow-226031 India
2. Department of Pharmaceutical Sciences; University of Maryland School of Pharmacy, PHN706; 20 N. Pine Street Baltimore MD-21201 USA
3. Department of Chemistry; Government Raza Post graduate College; Rampur 244901 India