Benzo [B]thienopyridines, process for their preparation and therapeutic compositions containing same

Therapeutic composition having a sedative activity comprising an effective amount of an active compound selected from the compounds having the formula:

• ##STR6## in which:
• R.sup.1 is selected from hydrogen;
• C.sub.1-6 alkyl;
• phenyl, tolyl, benzyl;
• benzyl substituted on the ring by a halogen atom, a nitro group, a cyano group, a carboxy group, a methoxycarbonyl group or one to three methoxy groups;
• phenethyl;
• (2-pyridyl)-methyl;
• (3-pyridyl)-methyl and (4-pyridyl)-methyl;
• R.sup.2 is selected from hydrogen and C.sub.1-6 alkyl;
• and
• R.sup.3 and R.sup.4 are independently selected from hydrogen, halogen, hydroxy, C.sub.1-6 alkyl and C.sub.1-6 alkoxy;
• and the pharmaceutically acceptable acid addition salts of said compounds, together with a therapeutically administrable carrier.

Therapeutic composition having a blood-platelet aggregation inhibiting activity comprising an effective amount of an active compound selected from the compounds having the formula:

• ##STR7## in which:
• R.sup.1 is selected from hydrogen;
• C.sub.1-6 alkyl;
• phenyl, tolyl, benzyl;
• benzyl substituted on the ring by a halogen atom, a nitro group, a cyano group, a carboxy group, a methoxycarbonyl group or one to three methoxy groups;
• phenethyl;
• (2-pyridyl)-methyl;
• (3-pyridyl)-methyl and (4-pyridyl)-methyl;
• R.sup.2 is selected from hydrogen and C.sub.1-6 alkyl;
• and
• R.sup.3 and R.sup.4 are independently selected from hydrogen, halogen, hydroxy, C.sub.1-6 alkyl and C.sub.1-6 alkoxy;
• and the pharmaceutically acceptable acid addition salts of said compounds, together with a therapeutically administrable carrier.