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抑制是通过4-(取代苯基)-2-
吡咯酮化合物实现的。与类似rolipram的化合物相比,这些化合物表现出更好的PDE4抑制作用,并且在抑制其他类别的PDE方面表现出选择性。本发明的化合物的公式为I:其中R1、R2和R3如本文所定义。