| 摘要 |
The invention relates to novel substituted phenyl ethers of the formula <IMAGE> (I) in which Ar represents a mono- or bi-cyclic carbocyclic aryl radical, or a mono- or bi-cyclic heterocyclic aryl radical bonded to a phenylene radical by way of a ring carbon atom, Ph represents a phenylene radical, n has the value 0 to 1 and alk represents alkylene having from 2 to 5 carbon atoms, the nitrogen atom and the oxygen atom or, if n is 0, the aromatic radical being separated from each other by at least two carbon atoms in the unbranched chain, and R1 and R2 each represents, independently of the other, hydrogen or lower alkyl, or together represent lower alkylene, oxa-lower alkylene, thia-lower alkylene, aza-lower alkylene or N-lower alkyl-aza-lower alkylene, and salts thereof, especially pharmaceutically acceptable non-toxic acid addition salts. Such compounds possess, on the one hand, blocking properties towards beta -adrenergic receptors and can therefore be used as beta -receptor-blockers with or without cardioselectivity for the treatment of Angina pectoris, hypertrophic cardiomyopathy and heart rhythm disorders and also as blood-pressure-reducing agents. On the other hand, such compounds possess beta -receptor-stimulating properties and can therefore be used as positively inotropically active agents, especially as cardiotonics, for the treatment of heart muscle insufficiency. |
