Uracils as potent antagonists of the human gonadotropin-releasing hormone receptor without atropisomers

Uracil derivatives were designed and synthesized to avoid atropisomers observed in the 6-methyluracils as antagonists of the human GnRH receptor. Optimization at the 1- and 5-positions of the uracil resulted in potent compounds such as 24 (Ki = 0.45 nM).

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