The ligand for the vesicular acetylcholine transporter

摘要

It is intended to provide a novel compound represented by the formula (I): (wherein R1 and R2 have the same meaning as defined in the specification) useful as a reagent for mapping of VAChT (radiotracer) or the like, which can be used for positron emission tomography (PET), a salt thereof and a method for producing the compound. It is also intended to provide a diagnostic agent containing the compound for diagnosing a cholinergic neurodegenerative disease (such as Alzheimer’s disease, dysmnesia, learning disability, schizophrenia, cognitive dysfunction, hyperactivity disorder, anxiety neurosis, depression, analgesia, or Parkinson’s disease) or the like.