| abstract |
A quaternary ammonium having a muscle relaxation activity compound represented by the formula (I): <IMAGE> wherein R1 represents a methylene, a lower alkylenoxy, a lower alkenylene, a lower alkynylene, -CO-, -COO-, a lower alkylene carbonyloxy, -CH(OR5)-, a lower alkylenecarbonyl, a hydroxy lower alkylene, -O-, -S-, -SO-, or -SO2-; R2 represents a hydrogen atom, a hydroxy lower alkyl, an aldehyde, a lower alkyl carbonyl, -NO2, or -NHR6; R3 represents a hydrogen atom of a group -R1-(CH2)a-[CH(CH2A)-CH2]b-A; R4 represents an anion; R5 and R6 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. |