Pyrrazolo-pyrimidine derivatives

摘要

The present invention relates to pyrrazolo-pyrimidine derivatives of formula (I): wherein R¹ to R⁴ and A are as defined in the specification, a process for the manufacture thereof, their use for treating or preventing metabotropic glutamate receptors mediated disorders, their use for the preparation of medicaments for treating such disorders and pharmaceutical compositions containing said derivatives.