abstract |
Novel quaternary ammonium compounds of formula (I) and any stereoisomers thereof. Wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and X − are defined in this application. This compound is useful as a medicament to treat asthma, a group of respiratory disorders called chronic obstructive pulmonary disease (COPD), allergic rhinitis, cold rhinorrhea, and urinary system diseases. [Chemical 1] |