| abstract |
The present invention provides a compound of formula Ia or Ib as defined herein or a pharmaceutically acceptable salt thereof; a pharmaceutical composition containing a compound of formula I; A method of treating a disorder or condition that can be treated by antagonizing the histamine H3 receptor comprising administering a compound of the formula and depression comprising administering a compound of formula I as defined above to a mammal in need of treatment , Mood disorder, schizophrenia, anxiety disorder, Alzheimer's disease, attention deficit disorder (ADD), attention deficit hyperactivity disorder (ADHD), psychosis, sleep disorder, obesity, dizziness, epilepsy, motion sickness, respiratory disease, allergy, allergy Evoked airway response, allergic rhinitis, nasal congestion, allergic congestion, congestion, hypotension, cardiovascular disease, gastrointestinal tract disease, gastrointestinal motility and acid To a method for treating a disorder or condition selected from the group consisting of excessive and attenuation of secretion. [Chemical 1] |