1. Division of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio
2. Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt
3. Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana
4. Dipartimento di Chimica Generale e Chimica Organica, Università degli Studi di Torino, Torino, Italy
5. Division of Pharmaceutical Organic Chemistry, College of Pharmacy, Helwan University, Ain Helwan, Cairo, Egypt
6. Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio