A compound of the formula ##STR60## or an acid addition salt thereof, wherein each D' is independently phenyl subtituted by 1 or 2 Z' groups;
- phenyl substituted by 1 or 2 Z' groups and by 1 or 2 further substituents each of which is independently halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylamino or di-(C.sub.1-4 alkyl)amino or naphthyl substituted by 1 or 2 --SO.sub.2 --NR.sub.2 '--Q--NR.sub.3 'R.sub.4 ' groups,
- wherein each Z' is independently --CO--NR.sub.2 '--Q--NR.sub.3 'R.sub.4 ', --CO--NR.sub.2 '--(CH.sub.2).sub.q --N.sup..sym. (CH.sub.3).sub.3 A.sup..crclbar., ##STR61## --SO.sub.2 --NR.sub.2 '--Q--NR.sub.3 'R.sub.4 ', --CO--(CH.sub.2).sub.a --N(C.sub.1-2 alkyl).sub.2, --CO--CH.sub.2 --N.sup..sym. (CH.sub.3).sub.3 A.sup..crclbar., --NH--CO--CH.sub.2 --N(C.sub.1-2 alkyl).sub.2, --NH--CO--CH.sub.2 --N.sup..sym. (CH.sub.3).sub.3 A.sup..crclbar., ##STR62## wherein Q is linear or branched C.sub.2-6 alkylene or --NH--CO--CH.sub.2 --,
- R.sub.1 ' is hydrogen or methyl,
- R.sub.2 ' is hydrogen or methyl,
- each of R.sub.3 ' and R.sub.4 ' is independently hydrogen, C.sub.1-6 alkyl, 2- or 3-n-C.sub.2-3 hydroxyalkyl or benzyl or
- --NR.sub.3 'R.sub.4 ' is pyrrolidino, piperidino or morpholino,
- Ta is chloro, hydroxy, amino, C.sub.1-4 alkylamino, di-(C.sub.1-4 alkyl)amino, C.sub.2-4 hydroxyalkylamino, di-(C.sub.2-4 hydroxyalkyl)amino, anilino or morpholino,
- each X' is independently --NR.sub.2 '--Q--NR.sub.3 'R.sub.4 ', --NR.sub.2 '--(CH.sub.2).sub.q --N.sup..sym. (CH.sub.3).sub.3 A.sup..crclbar. or ##STR63## wherein q is 2 or 3, and Q, R.sub.2 ', R.sub.3 ' and R.sub.4 ' are as defined above,
- a is 1, 2 or 3, and
- q is 2 or 3, and
- Q, R.sub.2 ', R.sub.3 ' and R.sub.4 ' are as defined above,
- each R.sub.10 is independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,
- each R.sub.11 is independently hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, (C.sub.1-4 alkyl)carbonylamino, ureido or Zb,
- wherein Zb is --NH--CO--CH.sub.2 --N(C.sub.1-2 alkyl).sub.2, --NH--CO--CH.sub.2 --N.sup..sym. (CH.sub.3).sub.3 A.sup..crclbar., ##STR64## wherein R.sub.1 ', Ta and X' are as defined above, each R.sub.12 is independently hydrogen or C.sub.1-4 alkyl, and
- Ya is --CO--, 13 CO--CH.dbd.CH--CO--, --CO--(CH.sub.2).sub.q --CO--, ##STR65## wherein T is halo;
- hydroxy;
- amino;
- C.sub.1-4 alkylamino;
- di-(C.sub.1-4 alkyl)amino;
- C.sub.1-4 alkylamino the alkyl moiety of which is monosubstituted by halo or hydroxy;
- di-(C.sub.1-4 alkyl)amino at least one of the alkyl moieties of which is monosubstituted by halo or hydroxy C.sub.5-6 cycloalkylamino;
- anilino;
- substituted anilino having on the phenyl ring 1 or 2 substituents selected from halo, C.sub.1-4 -alkyl, C.sub.1-4 alkoxy, hydroxy and phenoxy or morpholino,
- X is --NR.sub.2 --Q--NR.sub.3 R.sub.4 or --NR.sub.2 --Q--N.sup..sym. R.sub.5 R.sub.6 R.sub.7 A.sup..crclbar.,
- wherein Q is linear or branched C.sub.2-6 alkylene or --NH--CO--CH.sub.2 --,
- R.sub.2 is hydrogen or C.sub.1-4 alkyl,
- each of R.sub.3 and R.sub.4 is independently hydrogen;
- C.sub.1-6 alkyl;
- C.sub.2-6 alkyl monosubstituted in the 2-, 3-, 4-, 5- or 6-position by hydroxy or cyano;
- phenyl(C.sub.1-3 alkyl);
- phenyl(C.sub.1-3 alkyl) the phenyl ring of which is substituted by 1 to 3 substituents selected from the group consisting of chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy;
- C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups or
- --NR.sub.3 R.sub.4 is pyrrolidino, piperidino or morpholino,
- each of R.sub.5 and R.sub.6 is independently C.sub.1-6 alkyl;
- C.sub.2-6 alkyl monosubstituted in the 2-, 3-, 4-, 5- or 6-position by hydroxy or cyano;
- phenyl(C.sub.1-3 alkyl);
- phenyl(C.sub.1-3 alkyl) the phenyl ring of which is substituted by 1 to 3 substituents selected from the group consisting of chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy;
- C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups, and
- R.sub.7 is C.sub.1-4 alkyl or benzyl or
- --N.sup..sym. R.sub.5 R.sub.6 R.sub.7 is --NR.sub.7 -pyrrolidinium, --NR.sub.7 -piperidinium, --NR.sub.7 --morpholinium, pyridinium, methylpyridinium or dimethylpyridinium,
- wherein R.sub.7 is C.sub.1-4 alkyl or benzyl, and
- q is 2 or 3,
- wherein each A.sup..crclbar. is independently a non-chromophoric anion, and
- each halo is independently fluoro, chloro or bromo,
- with the proviso that the compound may be in acid addition salt form only if it contains at least one non-cationic basic group.