FIELD: organic chemistry, pharmaceuticals.
SUBSTANCE: invention relates to heterocyclic compounds of general formula I 
with PGl2 receptor agonist activity. In formula R1 and R2 represent independently optionally substituted phenyl; Y represents N, N-O or CR5; Z represents N or CR6; A represents NR7; D represents alkylene or alkenylene; or A and D may together form divalent group; E represents phenylene or direct bond, or D and E may together form divalent group; G represents O, S, SO, SO2; R3 and R4 represent hydrogen atom or alkyl; Q represents carboxyl, alkoxycarboxyl, tetrazolyl, carbamoyl or -CONH-SO-R10 group. Prostaglandin I2(PGl2) is potent inhibitor of platelet aggregation and may be effectively used in treatment of vascular diseases, arteriosclerosis, hypertension, etc.
EFFECT: new compounds and drugs for platelet aggregation inhibition and treatment of vascular and other diseases.
15 cl, 3 tbl, 109 ex
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