The present invention relates to novel pyrazolo- and imidazo-pyrimidine derivatives of formula I
wherein A, D, E, L, M, Q, R
1
, R
2
and R
3
are as defined hereinabove. The present invention also relates to a process for their preparation, a pharmaceutical composition containing said derivatives and a method of treating or preventing acute or chronic neurological disorder comprising administering to a patient in need of such treatment a pharmaceutical composition comprising a therapeutically effective amount of at least one such derivatives. These disorders include acute and chronic disorders
This invention offers isoxazole derivatives represented by the following formula (I)
in which R
1
and R
2
each stands for hydrogen, lower alkyl, amino and the like; R
3
stands for substituted or unsubstituted aryl or hetero aryl; R
4
stands for hydrogen or lower alkyl; R
5
stands for substituted or unsubstituted phenyl, furyl and the like; and Y stands for —CH
2
—, —CO—, —O—, —NH— and the like,
or pharmaceutically acceptable salts thereof which exhibit excellent p38MAPkinase-inhibiting action with reduced side-effects, and are useful for treating such diseases as chronic rheumatoid arthritis, ulcerative colitis and the like.