1. Department of Chemistry and Technologies of Drug
2. Sapienza University of Rome
3. I-00185 Rome
4. Italy
5. Department of Organic Chemistry
6. School of Chemistry
7. Madurai Kamaraj University
8. Madurai-625021
9. India
10. Department of Industrial Chemistry “Toso Montanari”
11. University of Bologna
12. I-40136 Bologna