| abstract |
An oxime derivative (I): <CHEM> that D ring and B bonding to D ring are (i)-(iv), wherein R<1> is hydrogen, lower alkyl ; R<2> is hydrogen, alkyl, phenyl, cycloalkyl, monocyclic ring containing nitrogen, lower alkyl substituted by benzene ring or cycloalkyl, lower alkyl substituted by monocyclic ring containing nitrogen ; R<3> is alkyl, phenyl, cycloalkyl, monocyclic ring containing nitrogen, lower alkyl substituted by benzene ring or cycloalkyl, lower alkyl substituted by monocyclic ring containing nitrogen ; e is 3-5, f is 1-3, p is 1-4, q is 1-2, r is 1-3 ; the position of the bond to D ring in (iii) and (iv) is a or b, and the ring in R<2> and R<3> may be substituted by lower alkyl, alkoxy, halogen, nitro, trihalomethyl ; and salts thereof. possess an agonistic activity on PGI2 receptor, so it is expected to be useful for prevention and/or treatment of thrombosis, arteriosclerosis, ischemic heart diseases, gastric ulcer and hypertension. |