12-A-7-IMIDAZO12-APYRIDIN-7-AMINES AS IMAGING TOOLS

摘要

The present invention relates to compounds of formula (I), or pharmaceutically acceptable acid addition salts thereof. The compounds may be used to combine and image tau aggregates and related beta-sheet aggregates, such as other beta-amyloid aggregates or alpha-synuclein aggregates: (I) In this formula, R ¹ is lower alkyl or lower alkyl substituted by halogen; R ² and R ³ are hydrogen or tritium.