Boehringer Mannehim Gmbh

Jens-Peter Hoelck

Alfred Mertens

Wolfgang Von Der Saal

Ulrich Martin

Erwin Boehm

The present invention is concerned with the use of compounds of the general formula: ##STR1## wherein R.sub.1 is a phenyl radical of the general formula: ##STR2## or R.sub.1 is a 5 or 6 membered heterocycle or when X is a valency bond R.sub.1 is also H, OH, mercapto, amino, alkyl, alkenyl, alkynyl, haloalkyl, alkylthio, formylaminoalkyl, pyridylcarbonylamino, cycloalkyl, or cycloalkenyl, alkoxyalkyl, carboxyalkyl, alkoxycarbonylalkyl or hydroxyalkyl of claim 1 or 2 for the preparation of pharmaceutical compositions with an erythrocyte aggregation inhibition action useful, for example, in states of shock or circulatory disturbance.

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Mannheim, Germany

Jens-Peter Hoelck