Pyrazolopyrimidinone derivatives having PDE7 inhibiting action
申请人:Inoue Hidekazu
公开号:US20050148604A1
公开(公告)日:2005-07-07
Pyrazolopyrimidinone derivatives expressed by the following general formula (IA) or (IB):
and the following general formula (IA′) or (IB′):
where the symbols are as disclosed in the specification, are provided as desired compounds. These compounds have the action of selectively inhibiting PDE7, thereby increasing the intracellular cAMP level and inhibiting the activation of T cells. Thus, they are useful for prevention and treatment of various allergic diseases and inflammatory or immunological diseases.