Therapeutically active derivatives of phenylethanol amines
申请人:Aktiebolaget Draco
公开号:EP0046144A1
公开(公告)日:1982-02-17
New bronchospasmolytically active compounds exhibiting long duration of action and reduced undesired side effects, of the structural formula
and therapeutically acceptable salts thereof, in which formula R, R1 and R2 are as follows: R is selected from the group consisting of -C(CH3)3,
R1 is selected from the group consisting of H and R2; R2 is selected from the group consisting of (a)
(b)
and (c)
in which formulas R3 is selected from the group consisting of
(a) H;
wherein R5 is a straight or branched alkyl group containing 1-4 carbon atoms; and
(c)
R4 is selected from the group consisting of (a) H (b) an alkyl group containing 1-3 carbon atoms, process for the preparation thereof, chemical intermediates at their preparation, pharmaceutical compositions containing them and their medicinal use.
New bronchospasmolytically active compounds exhibiting long duration of action and reduced undesired side effects, of the structural formula ##STR1## and therapeutically acceptable salts thereof, in which formula R, R.sup.1 and R.sup.2 are as follows: R is selected from the group consisting of --C(CH.sub.3).sub.3, ##STR2## R.sup.1 is selected from the group consisting of H and R.sup.2 ; R.sup.2 is selected from the group consisting of ##STR3## in which formulas R.sup.3 is selected from the group consisting of (a) H; ##STR4## wherein R.sup.5 is a straight or branched alkyl group containing 1-4 carbon atoms; and ##STR5## and wherein R.sup.4 is selected from the group consisting of (a) H (b) an alkyl group containing 1-3 carbon atoms, process for the preparation thereof, chemical intermediates at their preparation, pharmaceutical compositions containing them and their medicinal use.