Abstract: The present invention relates to compounds of general formula (I) ##STR1## and physiologically acceptable salts thereof wherein the group NR.sub.1 R.sub.2 represents a 5-7 membered saturated heterocyclic ring which may be substituted by one or two methyl groups; R.sub.3 is C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl or phenyl optionally substituted by 1 or 2 halogen atoms; R.sub.4 is phenyl or phenyl substituted by one or two groups selected from the group consisting of halogen, C.sub.1-4 alkyl, trifluoromethyl, trifluoromethoxy or (CH.sub.2).sub.n R.sub.5 wherein n is zero or 1 and R.sub.5 represents C.sub.1-4 alkoxy, hydroxy, nitro, cyano, CO.sub.2 R.sub.6, S(O).sub.p CH.sub.3, NR.sub.7 R.sub.8, CONR.sub.7 R.sub.8, SO.sub.2 NR.sub.7 CO(C.sub.1-4)alkyl, tetrazolyl, carboxamidotetrazolyl, or a 3-trifluoromethyl 1,2,4-triazolyl; R.sub.6 is hydrogen, C.sub.1-4 alkyl or benzyl; R.sub.7 is hydrogen or C.sub.1-4 alkyl, R.sub.8 is hydrogen, C.sub.1-4 alkyl, SO.sub.2 CH.sub.3 or SO.sub.2 CF.sub.3, X represent hydrogen, C.

Abstract: Compounds of general formula (I) ##STR1## and physiologically acceptable salts thereof; wherein R.sub.1 represents CH.sub.2 CONR.sub.5 R.sub.6 or CH.sub.2 COR.sub.7 ;R.sub.2 represents a phenyl group optionally substituted by 1 or 2 substituents selected from halogen, alkyl, nitro, cyano, trifluoromethyl, trifluoromethoxy, alkylthio, alkylsulphinyl, alkylsulphonyl, amino, substituted amino, hydroxy, alkoxy, methylenedioxy, alkoxycarbonyl, oxazolyl or oxadiazolyl;A represents a C.sub.1-4 straight or branched alkylene chain;R.sub.3 and R.sub.4 independently represent hydrogen or C.sub.1-4 alkyl or R.sub.3 and R.sub.4 together with the nitrogen atom to which they are attached form a saturated 5-7 membered heterocyclic ring, which ring may contain an additional heteroatom selected from oxygen, sulphur or nitrogen;R.sub.5 represents hydrogen or C.sub.1-4 alkyl;R.sub.6 represents C.sub.1-4 alkyl or phenyl, optionally substituted by halogen, or R.sub.5 and R.sub.

Abstract: The invention provides compounds of the general formula (I): ##STR1## or a physiologically acceptable salt, solvate (e.g. hydrate) or a metabolically labile ester thereof.The compounds may be used in the treatment or prophylaxis of hypertension and diseases associated with cognitive disorders.

Abstract: The invention provides compounds of formula (I): ##STR1## or a physiologically acceptable salt, solvate or metabolically labile ester thereof.The compounds may be used in the treatment or prophylaxis of hypertension and diseases associated with cognitive disorders.