February 11, 1975

.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, antiserotonic and local anaesthetic activity.

4

February 11, 1975

05/150,747

June 7, 1971

549/58   514/818 514/929 540/596 544/146 546/202 548/400

C07D   409/00   (20060101)   C07D   409/14   (20060101)   C07D   333/60   (20060101)   C07D   333/00   (20060101)  

Jun 12, 1970 [FR] 70.21679

260/330.5   260/247.1   260/326.3   260/293.68   260/293.57   260/326.34  

4156000 - Cyclopenta[b]thiophene derivatives - Owned by Hexachimie (Rueil Malmaison,FR) Cyclopenta[b]thiophene derivatives of formula: ##STR1## in which R.sub.1 is lower alkyl, R.sub.2 is hydrogen or lower alkyl, and R.sub.3 is hydrogen, lower alkyl, or aminoalkyl, and their salts are useful in therapy particularly as analgesic and anti-inflammatory agents.