| abstract |
The present invention relates to novel pyrrolidine derivatives of formula (1), their geometric isomers, their optically active form as enantiomers, diastereomers, mixtures of these and their racemate forms, as well as the salts thereof, wherein R1 is selected from the group comprising or consisting of H and Cl-C6 alkyl, for the prevention and / or treatment of preterm labor, premature birth or dysmenorrhea. |