1. School
of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K.
2. Department
of Chemistry, Swansea University, Singleton Park, Swansea SA2 8PP, U.K.
3. Department
of Pharmaceutical Chemistry and Drug Control, Faculty of Pharmacy
in Hradec Kralove, Charles University in Prague, Akademika Heyrovskeho
1203, 500 05 Hradec
Kralove, Czech Republic
4. School
of Chemical Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.