Abstract: The present invention provides linear, cyclic and trifurcate tri- and tetramine backbone multidentate chelating agents based on the 8-hydroxyquinoline chelating unit. The chelating agents may optionally be substituted with a substrate reactive moiety and antibody-metal ion conjugates may be produced for in vivo diagnostic and therapeutic methods.

Abstract: A compound represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different, and represent a hydrogen or halogen, and ring-opened free acid, amides and salts thereof are provided. The present invention also provides a process for the production of the above-mentioned compound starting from the known compound ML-236B.

Abstract: Novel quinoline sulfonamino derivatives having a vessel smooth muscle relaxation activity as well as a platelet agglutination inhibitory activity and inhibitory activity to protein kinase A, myosin light chain kinase, proteinkinase C, and calmodulindependent proteinkinase II, but having little action or cardio function; a process for the production of the derivatives, and a pharmaceutical composition containing the derivative.

Abstract: A quaternary ammonium having a muscle relaxation activity compound represented by the formula (I): ##STR1## wherein R.sub.1 represents a methylene, a lower alkylenoxy, a lower alkenylene, a lower alkynylene, --CO--, --COO--, a lower alkylene carbonyloxy, --CH(OR.sub.5)--, a lower alkylenecarbonyl, a hydroxy lower alkylene, --O--, --S--, --SO--, or --SO.sub.2 --; R.sub.2 represents a hydrogen atom, a hydroxy lower alkyl, an aldehyde, a lower alkyl carbonyl, --NO.sub.2, or --NHR.sub.6 ; R.sub.3 represents a hydrogen atom of a group --R.sub.1 --(CH.sub.2).sub.a --[CH(CH.sub.2 A)--CH.sub.2 ].sub.b --A; R.sub.4 represents an anion; R.sub.5 and R.sub.6 represent a hydrogen atom or a acetyl; A represents a quaternary ammonium group; a represents an integer of 1 to 8; b represents 0 or 1; m represents an integer of 1 to 4; and (Z) represents a trivalent benzene ring, a trivalent naphthalene ring, a trivalent diphenyl or a trivalent ethane radical.

Abstract: Novel quinoline sulfonamino derivatives having a vessel smooth muscle relaxation activity as well as a platelet agglutination inhibitory activity and inhibitory activity to protein kinase A, myosin light chain kinase, proteinkinase C, and calmodulindependent proteinkinase II, but having little action or cardio function; a process for the production of the derivatives, and a pharmaceutical composition containing the derivative.