Imidazo [1,2-c] quinazoline compounds

Claim 1

A compound selected from imidazo[1,2-c]quinazolines of the formula I: ##STR25## in which: Y represents oxygen or sulfur; R 1 represents: a) alkyl having 1 to 6 carbon atoms, optionally substituted by phenyl optionally mono- or disubstituted by halogen or alkyl or alkoxy having 1 to 6 carbon atoms; b) mono-, bi- or tricyclic cycloalkyl having 3 to 10 carbon atoms; c) an aromatic group chosen from among: phenyl and phenyl mono- or disubstituted by halogen or alkyl or alkoxy having 1 to 6 carbon atoms, and furyl and thienyl, or d) alkoxycarbonyl, aminocarbonyl or N,N-dialkylaminocarbonyl, in which alkyl has 1 to 6 carbon atoms, or benzoyl optionally mono- or disubstituted by halogen atom or alkyl or alkoxy having 1 to 6 carbon atoms; R 2 represents hydrogen or halogen or alkyl having 1 to 6 carbon atoms optionally substituted by amino, alkylamino or dialkylamino in which alkyl has 1 to 6 carbon atoms; R 3 represents: a) hydrogen, b) alkyl radical having 1 to 6 carbon atoms, optionally substituted by phenyl optionally mono- or polysubstituted by alkyl or alkoxy having 1 to 6 carbon atoms, or c) a radical of formula: R--CO--A-- in which: A is alkylene having 1 to 6 carbon atoms, and R is alkoxy having 1 to 6 carbon atoms or an amino radical of formula: ##STR26## in which R' and R", identical or different, each represent hydrogen or alkyl having 1 to 6 carbon atoms optionally substituted by hydroxyl or alkoxy having 1 to 6 carbon atoms, or R' and R" form, together with the nitrogen atom to which they are attached, a saturated 5 or 6 membered heterocyclic radical optionally containing a second hetero atom selected from oxygen and nitrogen, remaining ring atoms being carbon, d) phenyl, optionally substituted by one or more alkyl or alkoxy having 1 to 6 carbon atoms; X represents hydrogen or halogen, and pharmacologically-acceptable acid addition salts thereof.