- Homocyclic derivatives
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Compounds of the formula: STR1 wherein R 1 stands for hydrogen or a defined hydrocarbyl or halogenoalkenyl radical, R 2 stands for a defined hydrocarbyl, halogenoalkenyl or furylmethyl radical, R 3 is a substituent at position (a) or (b) and stands for a hydroxy or defined alkoxy or alkanoyloxy radical, R 4 stands for a defined alkoxy, cyanoalkoxy or alkenyloxy radical or a defined amino acid residue or peptide residue, and n stands for 1, 2 or 3, and pharmaceutically-acceptable salts thereof. Processes for the manufacture of the compounds. Pharmaceutical compositions comprising one of the compounds and a pharmaceutical diluent or carrier. The compounds are antagonists at the opiate receptors, and most of them are selective δ-receptor antagonists.
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