Ethanolamine compounds.

摘要

The invention provides compounds of the general formula (I) <CHEM> wherein Ar represents a phenyl group optionally substituted by one or more substituents selected from halogen atoms, or the groups C1-6 alkyl, nitro, -(CH2)qR, [where R is hydroxy, C1-6 alkoxy, -NR<3>R<4> (where R<3> and R<4> each represents a hydrogen atom, or a C1-4 alkyl group, or -NR<3>R<4> forms a saturated heterocyclic amino group which has 5-7 ring members and optionally contains in the ring one or more atoms selected from -O- or -S- or a group -NH- or -N(CH3)-), -NR<5>COR<6> (where R<6> represents a hydrogen atom or a C1-4 alkyl group, and R<6> represents a hydrogen atom or a C1-4 alkyl, C1-4 alkoxy, phenyl or -NR<3>R<4> group), -NR<5>SO2R<7> (where R<7> represents a C1-4 alkyl, phenyl or -NR<3>R<4> group), -COR<8> (where R<8> represents hydroxy, C1-4 alkoxy or -NR<3>R<4>), -SR<9> (where R<9> is a hydrogen atom, or a C1-4 alkyl or phenyl group), -SOR<9>, -SO2R<9>, or -CN, and q represents an integer from 0 to 3], or -O(CH2tR<1><1> [where R<1><1> represents a hydroxy or C1-4 alkoxy group and t is 2 or 3], or Ar is a phenyl group substituted by an alkylenedioxy group of formula -O(CH2)pO-, where p represents 1 or 2; R<1> and R<2> each represent a hydrogen atom or a C1-3 alkyl group, with the proviso that the sum total of carbon atoms in R<1> and R<2> is not more than 4; R<2><0> represents a C1-3 alkyl group; X represents a C2-8 alkylene C2-8 alkenylene or C2-8 alkynylene chain, and Y represents a C1-7 alkylene C2-7 alkenylene or C2-7 alkynylene chain, with the proviso that the sum total of carbon atoms in X and Y is 4 to 12; Q represents (a) <CHEM> (where R<1><2> is a straight or branched C1-3 alkylene group), <CHEM> (where one of R<1><3> and R<1><4> is a hydroxy group and the other is a hydrogen or halogen atom or a hydroxy group), <CHEM> [where R<1><5> is a group R<1><6>CO-, R<1><6>NHCO-, R<1><6>R<1><7>NSO2- or R<1><8>SO2- (where R<1><6> and R<1><7> is each a hydrogen atom or a C1-3 alkyl group and R<1><8> is a C1-3 alkyl group) and p is an integer 0 or 1], <CHEM> (where R<2><6> and R<2><7> is each a hydrogen atom or a C1-3 alkyl group or, when R<2><6> is a hydrogen atom, R<2><7> may also be a C1-4 alkoxycarbonyl group), <CHEM> (where R<1><9> is a C1-3 alkyl group), <CHEM> and physiologically acceptable salts and solvates (e.g. hydrates) thereof. The compounds have a stimulant action at beta 2-adrenoreceptors and may be used in the treatment of diseases associated with reversible airways obstruction such as asthma and chronic bronchitis.