| 摘要 |
<p>Benzimidazolin-2-one derivs. of formula (I) and their acid addn. salts are new: (R1 = H, alkyl (opt. substd. by OH, acyloxy, CH3O or dialkylamino) or aralkyl, CH3O or dialkylamino) or aralkyl. R2 and R3 are each H, halo, CH3, CH3O, CF3, CN, NO2, NH2 or dialkylamino. R4 = H, alkyl, acyl, acyloxyalkyl, hydroxyalkyl, methoxyalkyl or aralkyl, n = 2 or 3. All alkyl etc. are 'lower'). New intermediate phenylenediamines are of formula (II): (I) have hypotensive activity. In an example 1-(imidazolin-2-yl)-benzimidazolin-2-one was prepd. by reacting 2-(2-aminoanilino)imidazoline with urea.</p> |
