Department of Medicinal Chemistry, Neurocrine Biosciences, Inc. 12790 El Camino Real, San Diego, CA 92130, USA.
Abstract:
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).