title: Synthesis and structure-activity relationships of thieno[2,3-d]pyrimidine-2,4-dione derivatives as potent GnRH receptor antagonists.
abstract: The synthesis and SAR studies of thieno[2,3-d]pyrimidine-2,4-diones as human GnRH receptor antagonists to treat reproductive diseases are discussed. It was found that the 2-(2-pyridyl)ethyl group on the 5-aminomethyl functionality of the core structure was a key feature for good receptor binding activity. SAR study of the 6-(4-aminophenyl) group suggests that hydrophobic substituents were preferred. The best compound from this series had binding affinity (K(i)) of 0.4 nM to the human GnRH receptor.
mesh_terms: D011744:Pyrimidinones / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D011966:Receptors, LHRH / Q000037:antagonists & inhibitors*; D013329:Structure-Activity Relationship; D013876:Thiophenes / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: D011744:Pyrimidinones; D011966:Receptors, LHRH; D013876:Thiophenes