1. Division of Medicinal Chemistry and Pharmacology; CSIR-Indian Institute of Chemical Technology; Hyderabad- 500 007 India
2. Centre for Nuclear Magnetic Resonance; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
3. Centre for Chemical Biology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
4. Catalytic Chemistry Research Chair, Chemistry Department, College of Science; King Saud University; Riyadh 11451 Saudi Arabia.