1. a School of Chemistry, University of St. Andrews, North Haugh , St. Andrews, Fife, KY16 9ST, United Kingdom
2. b Laboratory for the Synthesis of Biologically Active Compounds, Perm Pharmaceutical Academy , P.O. Box 8519, Perm-51, 614051, Russia
3. c Laboratory for the Synthesis of Biologically Active Compounds, Perm Pharmaceutical Academy , P.O. Box 8519, Perm-51, 614051, Russia
4. d School of Chemistry, University of St. Andrews, North Haugh , St. Andrews, Fife, KY16 9ST, United Kingdom