[1] Chem & Chem Engn Res Ctr Iran, POB 14335-186, Tehran 1496813151, Iran
[2] KN Toosi Univ Technol, Peptide Chem Res Ctr, POB 15875-4416, Tehran 1969764499, Iran
[3] Pharmidex Pharmaceut Serv Ltd, London W1S 1YH, England
[4] Sharif Univ Technol, Dept Chem, POB 11155-3516, Tehran 1458889694, Iran