1. Department of Pharmaceutical Chemistry Teegala Ram Reddy College of Pharmacy Meerpet Hyderabad Telangana 500097 India
2. Department of Pharmaceutical Chemistry Teegala Krishna Reddy College of Pharmacy Hyderabad Telangana 500097 India
3. Department of Pharmaceutical Chemistry Center for Pharmaceutical Sciences Institute of Sciences and Technology JNTU Hyderabad Telangana 500085 India