Selective PDE4 inhibition is achieved by 4-(substituted-phenyl)-2-pyrrolidinone compounds. The compounds exhibit improved PDE4 inhibition as compared to compounds like rolipram and show selectivity with regard to inhibition of other classes of PDEs. The compounds of the present invention are of formula I:
wherein R
1
, R
2
, and R
3
are as defined herein.
选择性PDE4抑制可通过4-(取代苯基)-
2-吡咯烷酮化合物实现。这些化合物相对于类似于洛利普兰的化合物表现出改进的PDE4抑制作用,并显示出对其他类别的PDE抑制的选择性。本发明的化合物的公式为I:其中R1、R2和R3如本文所定义。