| abstract |
Compounds of formula (I) wherein R is an alkyl, aryl or arylalkyl group wherein the aryl is phenyl, naphthyl or heterocycle; R1 and R2, the same or different, are hydrogen atoms or alkyl groups; R3 is an aryl or arylalkyl group wherein the aryl is as above; R4 is a heterocycle optionally substituted with a heterocycle or phenyl, or it is a phenyl group substituted with a heterocycle (R4 is not imidazole or indole); X is a bond or -OCONH or -CONH-group, processes for their preparation and pharmaceutical compositions thereof, are described. The compounds of formula (I) are endowed with a dual ACE-inhibitory and NEP-inhibitory activity and are useful in the treatment of cardiovascular diseases. |