The present invention provides the compound (R)-(-)-4-amino-3,5-dichloro-α-[[[6-[2-(2-pyridinyl)ethoxy]hexyl]amino] methyl]benzenemethanol or physiologically acceptable salts thereof, processes for its preparation, pharmaceutical formulations containing it, and its use in medicine.
Dichloroaniline compounds useful for method of therapy or prophylaxis of
申请人:Glaxo Group Limited
公开号:US04937251A1
公开(公告)日:1990-06-26
The invention provides compounds of the general formula (I) ##STR1## wherein X represents a bond or a C.sub.1-6 alkylene, C.sub.2-6 alkenylene or C.sub.2-6 alkynylene chain, and Y represents a bond, or a C.sub.1-4 alkylene, C.sub.2-4 alkenylene or C.sub.2-4 alkynylene chain with the proviso that the sum total of carbon atoms in X and Y is not more than 8; Py represents a pyridyl group optionally substituted by one or two substituents selected from halogen atoms, hydroxy, C.sub.1-3 alkyl and C.sub.1-3 alkoxy groups; and R.sup.1 and R.sup.2 each represent a hydrogen atom or a C.sub.1-3 alkyl group, with the proviso that the sum total of carbon atoms in R.sup.1 and R.sup.2 is not more than 4; and physiologically acceptable salts and solvates (e.g. hydrates) thereof. The compounds have a stimulant action at .beta..sub.2 -adrenoreceptors and may be used in the treatment of diseases associated with reversible airways obstruction such as asthma and chronic bronchitis.