SUBSTITUTED CARBAMOYLOXY DERIVATIVES OF PHENYLETHANOLAMINE

摘要

83 s 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 is selected from the group consisting of -C(CH3)3, and R1 is selected from the group consisting of H and R2 , R represents the radical of the formula wherein R is selected from the group consisting of (a) H (b) alkyl groups containing 1-3 carbon atoms (c) wherein R5 is selected from the group consisting of (a) OH (b) alkoxy groups containing 1-3 carbon atoms and wherein R4 is selected from the group consisting of 84 (a) H (b) alkyl groups containing 1-3 carbon atoms, with the proviso that R3 and R4 are combined as follows: when R3 is then is R4 H H alkyl group of 1-3 carbon atoms H or an alkyl group of 1-3 carbon atoms R5 H processes for the preparation thereof,chemical intermediates at their preparation, pharmaceutical preparations containing them, and their medicinal use.