| 摘要 |
<p>Substituted tetrahydropyridazino[1,6-a]benzimidazole compounds such as 2-methylamino-6,7,8,9-tetrahydropyri- dazino[1,6-a]benzimidazole are prepared by reacting a 2- halo-6,7,8,9-tetrahydropyridazino[1,6-a]benzimidazole with an appropriate amine. The compounds are useful as bronchodilators.</p> |
