Identification and initial structure-activity relationships of a novel non-peptide quinolone GnRH receptor antagonist

Article abstract of DOI:10.1016/S0960-894X(99)00446-1

Screening of the Merck sample collection for non-peptide compounds with binding affinity for the rat GnRH receptor led to the identification of the substituted quinolone (1) as a lead compound in the search for a non-peptide GnRH receptor antagonist. Substantial improvements in potency (~300 fold) were achieved by addition of an alkyl amine at the 4-position, a 3,5-dimethylphenyl group at the 3-position and 6-nitro-7-chlorosubstitution of the 1H-quinolone core.