| 摘要 |
<p>This invention relates to new ethanolamine derivatives having gut selective sympathomimetic, anti-ulcerous, anti-pancreatitis, lipolytic and anti-pollakiuria activities and represented by general formula (I), wherein R1 is aryl, aryloxy(lower)alkyl or a heterocyclic group, each of which may be substituted with substituent(s) selected from the group consisting of halogen, hydroxy, protected hydroxy, aryloxy, lower alkoxy, halo(lower)alkoxy, nitro, cyano, amino and acylamino, R2 is hydrogen or an N-protective group, R3 is lower alkoxy substituted with acyl, R4 is lower alkoxy substituted with acyl, and A is lower alkylene, and pharmaceutically acceptable salts thereof, to processes for the preparation thereof and to a pharmaceutical composition comprising the same.</p> |
