| abstract |
Benzazepin-, benzoxazepin- and benzothiazepin-N-acetic acid derivs. of formula (I) and their salts are new. R<1> = lower alkoxy(lower)alkyl (in which the alkoxy is opt. substd. by lower alkoxy) or phenyl(lower)alkyl, or phenoxy(lower)alkyl (opt. ring substd. by lower alkyl or alkoxy or halo) or naphthyl(lower)alkyl; A = CH2, O or S; R<2>, R<3> = H or halogen; R<4>, R<5> = H or a biolabile ester containing gp. |