Phenylethenyl or phenylethynyl derivatives functioning as glutamate receptor antagonists

摘要

This invention relates to a compound and the use of the compound of the formula wherein R¹, R², R³, R⁴ and R⁵ are as defined in the description, A signifies -CH-CH- or -C≡C-; and B signifies wherein R⁶ to R²⁶, X and Y are as defined in the specification or a pharmaceutically acceptable salt thereof, for use in pharmaceutical compositions for the treatment or prevention of mGluR5 receptor mediated disorders.