The present invention discloses a new class of compounds that exhibit an inhibitory effect on influenza virus type A and B, which may or may not be resistant to other drugs, as well as on other types of viruses, such as flavivirus but also on protozoa and other micro-organisms, their preparation methods, pharmaceutical formulations containing them and their use as medicinal products for the treatment of various conditions caused by particular microorganisms, including viruses, bacteria and protozoa, which affect animal and human health.