Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyls or alkenyls having 1 to 4 atoms or ##STR2## is pyrrolidino, piperidino, perhydroazepino or morpholino, and RX is a salt-forming moiety. The compounds are prepared by reacting 2-acetyl benzothiophene with ##STR3## The compounds possess a blood plaque aggregation inhibiting property and also possess spasmolytic, analgesic, anti-inflammatory and coronary, cerebral and peripheral vasodilatatory properties.

Abstract: .beta.-[Benzo(b)thienyl-3] propionic acid derivatives in the form of their amino esters (and salts thereof) are prepared. These compounds have spasmolytic, vasodilatatric, antiserotanic and local anaesthetic activity.

Abstract: Substituted thienyl-acetic acid esters of the formula: ##STR1## in which R.sub.1 and R.sub.2 each, independently is H, CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, OCH.sub.3, SCH.sub.3, Cl Br or NO.sub.2, R.sub.3 is phenyl or cyclohexyl and R.sub.4 is H, or R.sub.3 and R.sub.4 together are cyclohexylidene, n is 2 or 3, and A is monoalkylamino or dialkylamino, each alkyl radical having 1 to 4 carbon atoms, or amino derived from a cycloalkylamine of 5 to 7 chain members which may contain an additional hetero-atom, provided that each of R.sub.1 and R.sub.2 is not H if R.sub.3 is phenyl or cyclohexyl and R.sub.4 is H, racemates, optical isomers, and their pharmaceutically acceptable acid addition salts and quaternary ammonium salts obtained with alkyl halides, have marked activity as peripheral vasodilators, platelet aggregation inhibitors, spasmolytic agents, coronary and cerebral vasodilators, and papaverine-like activity.

Abstract: .beta.-[Benzo(b)thienyl-3]propionic acid derivatives in the form of their amino esters (and salts thereof) are prepared. These compounds have spasmolytic, vasodilatatric, antiserotanic and local anaesthetic activity.