3-(2-(MONO-AND DIALKYLAMINO)PROPYL)-1,2,3,4-TETRAHYDRO-5H-(1)BENZOPYRANO(3,4-C)PYRIDIN-5-ONES,THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

Anticholinergic 3-[2-(mono- and dialkylamino)-propyl]-1,2,3,4-tetrahydro-5H-[1]benzopyrano[3,4-c]-pyri din-5-ones useful for treating bronchospastic diseases in mammals are disclosed. Also disclosed are methods for preparing said compounds, pharmaceutical compositions containing them and methods for using said pharmaceutical compositions. A method for preparing the intermediate which is required to prepare the unsubstituted benzopyrano-[3,4-c]pyridin-5-ones of the invention is also disclosed.