1. Institut fur Organische Chemie, Albert-Ludwigs-Universitat Freiburg Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
2. Peptide Chemistry Research Center, K. N. Toosi University of Technology, Tehran 15875-4416, Iran
3. Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah 6714415185, Iran