| abstract |
Compounds of formula (I): wherein: R1 is aryl; R2 is hydrogen, alkyl, alkoxy, halogen or cyano; R3 is a group of formula -B-NR4R5, where R4 and R5 are independently hydrogen, alkyl or substituted alkyl or R4 and R5, together with the nitrogen to which they are attached, form a heterocycle, and B is alkylene or a group of formula -CH2CH(OR6)CH2-, where R6 is hydrogen, alkanoyl, substituted alkanoyl or arylcarbonyl, or a group of formula -D-R7, where D is a single bond or alkylene and R7 is a heterocycle; and A is alkylene; and pharmaceutically acceptable salts and esters thereof are useful for the treatment and prevention of circulatory diseases and psychosis. |