Tetrazolyl-(phenoxy and phenoxyalkyl) piperidininylpyridazines as antiviral agents
申请人:STERLING WINTHROP INC.
公开号:EP0577217A1
公开(公告)日:1994-01-05
Compounds of the formula
wherein:
Y is a bond, or C₁-C₆ alkylene;
R₁ is hydrogen or C₁-C₃ lower-alkyl;
R₂ and R₃ are each independently hydrogen, C₁-C₃ lower-alkyl or halogen;
R₄ is hydrogen or C₁-C₃ lower-alkyl;
or pharmaceutically acceptable acid addition salts thereof, and compositions thereof,
are useful as antiviral agents, particularly against picornaviruses.