1. Division of Natural Products Chemistry; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500007 India
2. Department of Science and Humanities; VFSTR University; Vadlamudi Guntur 522213 India
3. 4. Crop Protection Chemicals Division; Indian Institute of Chemical Technology; Tarnaka Hyderabad 500007 India
5. Centre for Chemical Sciences and Technology; Institute of Science and Technology; Jawaharlal Nehru Technological University Hyderabad; Kukatpally Hyderabad 500085 T.S. India