Substituted diketopiperazines as oxytocin receptor antagonists

Abstract

Compounds of formula (I) wherein R1 is 2-indanyl, R2 is 1-ethylpropyl, R3 is a heterocyclic group optionally substituted by one or more C1-6 alkyl groups, R4 represents methyl and R5 represents hydrogen or methyl and pharmaceutically acceptable derivatives thereof are described, as are processes for their preparation, pharmaceutical compositions containing them and their use in medicine, particularly their use as oxytocin antagonists.

Dependencies are inferred from the claim text.