6-Substituted tetrahydroimidazo[2,1-a]phthalazines and use as bronchodilators

摘要

Substituted tetrahydroimidazo[2,1-a]phthalazine compounds such as 6-methylamino-7,8,9,10-tetrahydroimidazo[2,1-a]phthalazine are prepared by reacting a 6-halo-7,8,9,10-tetrahydroimidazo[1,2-a]phthalazine with an appropriate amine. The compounds are useful as bronchodilators.