three 3-methanesulphonamido , 4-hydroxy ring substituted phenylethanolamines with n-isopropyl ( soterenol ) , n-t-butyl ( mj7999-1 ) and n- ( 1-phenyl-t-butyl ) ( mj9184-1 ) amine substituents have been compared with ( ) -isoprenaline for their ability to produce beta-receptor mediated reductions in serotonin-induced increases in pulmonary resistance , decreases in soleus muscle contractility , and increases in heart rate in anaesthetized cats .
C0022245
isoprenaline
C0039231
increases