1. Institute of Organic
Chemistry and Biochemistry, Academy of Sciences of the Czech Republic,
v.v.i., 166 10 Prague, Czech Republic
2. Johns
Hopkins Drug Discovery, Johns Hopkins University, Baltimore, Maryland 21205, United States
3. Department
of Chemistry, McDaniel College, Westminster, Maryland 21157, United States
4. Johns
Hopkins Department of Neurology, Johns Hopkins University, Baltimore, Maryland 21205, United States