The present invention provides a oxazole compound represented by Formula (1), or a salt thereof:
wherein R
1
is an aryl group which may have one or more substituents; R
2
is an aryl group or a nitrogen atom-containing heterocyclic group each of which may have one or more substituents; and W is a divalent group represented by —Y
1
-A
1
- or —Y
2
—C(═O)— wherein Y
1
is a group such as —C(═O)—, A
1
is a group such as a lower alkylene group, and Y
2
is a group such as a piperazinediyl group. The oxazole compound has a specific inhibitory action against phosphodiesterase 4.
本发明提供了一种由式(1)表示的
噁唑化合物或其盐:其中R1是一个芳基基团,可以有一个或多个取代基;R2是一个芳基基团或一个含氮杂环基团,每个基团可以有一个或多个取代基;W是一个二价基团,表示为—Y1-A1-或—Y2—C(═O)—,其中Y1是如—C(═O)—这样的基团,A1是如较低的烷基链基团这样的基团,而Y2是如
哌嗪二基基团这样的基团。该
噁唑化合物具有特定的
磷酸二酯酶4抑制作用。