Abstract: Compounds of formula (I) wherein n is 0, 1 or 2; and R.sup.1 and R.sup.2, which may be the same or different, each represent one or more ring substituent(s) selected from: hydrogen, hydroxy, halogen, cyano, nitro, C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl or C.sub.1-6 alkoxy (where the alkyl or cycloalkyl moiety may be optionally substituted by one or more substituents selected from halogen atoms and hydroxyl groups); --NR.sup.4 R.sup.5 where R.sup.4 and R.sup.5, which may be the same or different, each represent hydrogen or C.sub.1-6 alkyl; --S(O).sub.m R.sup.6, where m is 0, 1, 2 or 3 and R.sup.6 represents hydrogen, C.sub.1-6 alkyl or C.sub.3-6 cycloakyl; --SO.sub.2 NR.sup.4 R.sup.5 where R.sup.4 et R.sup.5 are each as defined above; phenyl, phenylC.sub.1-3 alkoxy or phenylC.sub.1-3 alkyl where the phenyl group may be optionally substituted by one or more substituents independently selected from C.sub.1-6 alkyl, C.sub.1-6 alkoxy, hydroxy, nitro, halogen and amino; and --CO.sub.2 H or --COR.sup.7 where R.sup.

Abstract: Compounds of formula (I) wherein n is 0, 1 or 2; and R.sup.1 and R.sup.2, which may be the same or different, each represent one or more ring substituent(s) selected from: hydroxy, halogen, cyano, nitro, C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl or C.sub.1-6 alkoxy (where the alkyl or cycloalkyl moiety may be optionally substituted by one or more substituents selected from halogen atoms and hydroxyl groups); --NR.sup.4 R.sup.5 where R.sup.4 and R.sup.5 which may be the same or different, each represent hydrogen or C.sub.1-6 are each as defined above; phenyl, phenyl C.sub.1-3 alkoxy or phenyl C.sub.1-3 alkyl where the phenyl group may be optionally substituted by one or more substituents independently selected from C.sub.1-6 alkyl, C.sub.1-6 alkoxy, hydroxy, nitro, halogen and amino; and --CO.sub.2 H or --COR.sup.7 where R.sup.7 is C.sub.1-6 alkyl or C.sub.3-6 cycloalkyl; R.sup.3 is hydrogen or C.sub.

Abstract: Compounds of general formula (I) ##STR1## wherein R.sup.1 represents an optionally substituted carbocyclic or heterocyclic aryl group, or an optionally substituted alkyl, alkenyl, cycloalkyl or cycloalkenyl group; R.sup.2 represents an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl or cycloalkenyl group or an optionally substituted carbocyclic or heterocyclic aryl or aralkyl group; R.sup.3 represents a hydrogen atom or an alkyl group; and either X represents an oxygen or sulphur atom, a group, --CH.sub.2 -- or a group NR.sup.4 where R.sup.4 represents a hydrogen atom or a C.sub.1-4 alkyl group; and Y represents a group --CH.sub.2 -- or --CH.sub.2 CH.sub.2 -- or X--Y together represent the group --CH.dbd.CH--; and salts and physiologically functional derivatives thereof are useful in the treatment of tumors. Processes for preparing the compounds, intermediates useful in their preparation, pharmaceutical compositions containing them and their use in the treatment of tumors are also described.

Abstract: Use of Methyl N-[6-(3,4,5-trimethoxybenzyloxy)imidazo [1,2-6]pyridazin-2-yl]carbamate or pharmaceutically acceptable salt to treat lymphocytic leukemia is disclosed.

Abstract: Methyl N-[6-(3,4,5-trimethoxybenzloxy) imidazo [1,2-6]pyridazin-2-yl]carbamate is disclosed which is used to treat leukemia.

Abstract: Compounds of general formula (I) ##STR1## wherein R.sup.1 represents an optionally substituted carbocyclic or heterocyclic aryl group, or an optionally substituted alkyl, alkenyl, cycloalkyl or cycloalkenyl group; R.sup.2 represents an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl or cycloalkenyl group or an optionally substituted carbocyclic or heterocyclic aryl or aralkyl group; R.sup.3 represents a hydrogen atom or an alkyl group; and either X represents an oxygen or sulphur atom, a group --CH.sub.2 -- or a group NR.sup.4 where R.sup.4 represents a hydrogen atom of a C.sub.1-4 alkyl group; and Y represents a group --CH.sub.2 -- or --CH.sub.2 CH.sub.2 -- or X--Y together represent the group --CH.dbd.CH--; and salts and physiologically functional derivatives thereof are useful in the treatment of tumours. Processes for preparing the compounds, intermediates useful in their preparation, pharmaceutical compositions containing them and their use in the treatment of tumours are also described.

Abstract: Compounds of general formula (I) ##STR1## wherein R.sup.1 represents an optinally substituted carbocyclic or heterocyclic aryl group, or an optionally substituted alkyl, alkenyl, cycloalkyl or cycloalkenyl group; R.sup.2 represents an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl or cycloalkenyl group or an optionally substituted carbocyclic or heterocyclic aryl or aralkyl group; R.sup.3 represents a hydrogen atom or an alkyl group; and either X represents an oxygen or sulphur atom, a group --CH.sub.2 -- or a group NR.sup.4 where R.sup.4 represents a hydrogen atom or a C.sub.1-4 alkyl group; and Y represents a group --CH.sub.2 -- or --CH.sub.2 CH.sub.2 -- X-Y together represent the group --CH.dbd.CH--; and salts and physiologically functional derivatives thereof are useful in the treatment of tumours. Processes for preparing the compounds, intermediates useful in their preparation, pharmaceutical compositions containing them and their use in the treatment of tumours are also described.