Address: Division of Organic Chemistry and Biochemistry Ruder Boskovic Institute Bijenicka c. 54HR-10000 ZagrebCROATIA, Europe Head: Dr. Kata Majerski tel. +385 1 4680 196 fax. +385 1 4680 195 e-mail: majerski@irb.hr Secretary: Barica Baborsky tel. +385 1 4680 195 fax. +385 1 4680 195 e-mail: baborsky@irb.hr