A description follows of benzophenones having an antifungal activity and responding to the general formula (I): ##STR1## wherein: R.sub.1 and R.sub.2, the same or different, represent C.sub.1 -C.sub.6 alkyl groups, C.sub.7 -C.sub.10 arylalkyl groups; or R.sub.1 and R.sub.2, considered jointly with N, represent a C.sub.3 -C.sub.8 heterocyclic group or a C.sub.2 -C.sub.7 heterocyclic group containing a second hetero-atom selected from O and S, said heterocyclic groups being optionally subsituted with one or more C.sub.1 -C.sub.4 alkyl groups;R.sub.3 and R.sub.4, the same or different, represent H atoms, C.sub.1 -C.sub.3 alkyl groups;K represents an oxygen atom or methylene;A represents a benzene group, optionally sustituted with one or more halogen atoms, C.sub.1 -C.sub.4 alkyl or haloalkyl groups, C.sub.1 -C.sub.4 alkoxylics, C.sub.1 -C.sub.4 haloalkoxylics;Y represents a C.sub.6 -C.sub.10 aryl group; said group may be optionally substituted with one or more halogen atomos, C.sub.1 -C.sub.4 alkyl or haloalkyl groups, C.sub.1 -C.sub.4 alkoxylics, C.sub.1 -C.sub.4 haloalkoxylics.