Spiro-quinolone hydantoins, pharmaceutical compositions containing them, and processes for their preparation
申请人:PFIZER INC.
公开号:EP0017477A1
公开(公告)日:1980-10-15
Spiro-quinolone hydantoins having utility in preventing or alleviating chronic diabetic complications such as cataracts, reinopathy and neuropathy of the formula:
and the pharmaceutically acceptable acid addition salts thereof, wherein n is 1 or 2 and R, and R2 are each hydrogen, chloro, bromo, fluoro, C,-C3 alkyl or C1-C3 alkoxy; pharmaceutical composition containing them, and processes for their preparation.