Description:A.-M. Rydén, O. Kayser: Chemistry, Biosynthesis and Biological Activity of Artemisinin and Related Natural Peroxides.-M.T.H. Khan: Sugar-derived Heterocycles and Their Precursors as Inhibitors Against Glycogen Phosphorylases (GP).-R.P. Verma: Cytotoxicity of Heterocyclic Compounds against Various Cancer Cells: A Quantitative Structure-Activity Relationship Study.- M. Alamgir, D.St.C. Black, N. Kumar: Synthesis, Reactivity and Biological Activity of Benzimidazoles.-M.T.H. Khan: Heterocyclic Compounds against the Enzyme Tyrosinase Essential for the Melanin Production – Biochemical Features of Inhibition.-O. Demirkiran: Xanthones in Hypericum: Synthesis and Biological Activites.-F. Clerici, M.L. Gelmi, S. Pellegrino, D. Pocar: Chemistry of Biologically Active Isothiazoles.-R. Gambari, I. Lampronti, N. Bianchi, C. Zuccato, G. Viola, D. Vedaldi, F. Dall’Acqua: Structure and Biological Activity of Furocoumarins