| abstract |
Compounds of formula …<CHEM>… wherein, R is alkyl or alkoxy, A is tetrahydro- 3-pyridyl which may be substituted at the N-position by alkyl optionally substituted by a hydroxy or alkoxy group, or R<1>-NHCO- (wherein R<1> is a hydrogen, alkyl or unsubstituted or substituted phenyl group) or 3-pyridyl group], which possess inhibitory activities on platelet aggregation, and methods for their production as well as therapeutic compositions containing these compounds as used in cerebral and peripheral vascular insufficiency and its complications. |