Heterobicyclic derivatives of the formula:
1
wherein
R
1
is aryl which may have suitable substituent(s), ar(lower)alkyl which may have suitable substituent(s), halo(lower)alkyl, protected carboxy(lower)alkyl, acyl(lower)alkyl, heterocyclic group or heterocyclic(lower)alkyl which may have suitable substituent(s),
R
2
is aryl which may have suitable substituent(s) or heterocyclic group, and
R
3
is hydrogen, lower alkoxy or arylthio,
and a pharmaceutically acceptable salt thereof which are useful as a medicament.
Pyrido[2,3-a]pyrazine derivatives as PDE-IV and TNF inhibitors
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0920867A1
公开(公告)日:1999-06-09
Heterobicyclic derivatives of formula (I) wherein R1 is aryl which may have suitable substituent(s), ar(lower)alkyl which may have suitable substituent(s), halo(lower)alkyl, protected carboxy(lower)alkyl, acyl(lower)alkyl, heterocyclic group or heterocyclic(lower)alkyl which may have suitable substituent(s), R2 is aryl which may have suitable substituent(s) or heterocyclic group, and R3 is hydrogen, lower alkoxy or arylthio, and a pharmaceutically acceptable salt thereof which are useful as PDE IV and TNF inhibitors for the treatment of hepatitis in human beings and animals.