1. Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
2. Department of Chemistry, University of Jyväskylä, Jyväskylä, Finland
3. Department of Chemistry, Faculty of Science, Alexandria University, Alexandria, Egypt
4. Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
5. Department of Organic Chemistry, University of Valencia, Burjassot, Spain Dr. Moliner 50, Valencia