| abstract |
Isothiazolo-quinoline derivatives of the formula I which may exist as tautomers (formula II) are described which are cytotoxic for various tumor cell lines and are useful in the treatment of neoplastic diseases. <CHEM> wherein R is selected from (a) lower alkyl, (b) haloalkyl, (c) lowercycloalkyl, (d) alkylamino, (e) an aromatic heterocyclic group and (f) a phenyl group; W, X and Z are independently selected from hydrogen, halogen and lower alkyl; and Y is selected from a (a) phenyl group, (b) -NR2R3, (c) a bicyclic N-containing heterocyclic group, and (d) -OR10, wherein R10 is hydrogen, lower alkyl or a phenyl group; or any two of W, X, Y and Z taken together form a fused, substituted or unsubstituted, aromatic group or heterocyclic group. |