1. a Institute of Chemical Physics, Armenian National Academy of Sciences , Yerevan, Armenia
2. b Institute of Fine Organic Chemistry, Armenian National Academy of Sciences , Yerevan, Armenia
3. c Research Center of Radiation Medicine and Burns, Ministry of Health , Yerevan, Armenia
4. d Division of Medicinal Chemistry, Department of Pharmaceutical Sciences, College of Pharmacy , University of Arkansas, Medical Sciences Campus , Little Rock, Arkansas, USA
5. e Carlson School of Chemistry and Biochemistry , Clark University , Worcester, MA, USA