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Identification of substituted 6-amino-4-phenyltetrahydroquinoline derivatives: potent antagonists for the follicle-stimulating hormone receptor.

Substituted 6-amino-4-phenyl-tetrahydroquinoline derivatives are described that are antagonists for the G(s)-protein-coupled human follicle-stimulating hormone (FSH) receptor. These compounds show high antagonistic efficacy in vitro using a CHO cell line expressing the human FSH receptor. Antagonist 10 also showed a submicromolar IC(50) in a more physiologically relevant rat granulosa cell assay and was found to significantly inhibit follicle growth and ovulation in an ex vivo mouse model. This compound class may open the way toward a novel, nonsteroidal approach for contraception.