Optimization of 2,4-diaminopyrimidines as GHS-R antagonists: Side chain exploration
摘要:
The synthesis and structure-activity relationships of the 4- and 6-substituents of 2,4-diaminopyrimidine-based growth hormone secretagogue receptor (GHS-R) antagonists are described. Diaminopyrimidines with 6-norbornenyl (4n) and 6-tetrahydrofuranyl (4p) substitutents were found to exhibit potent GHS-R antagonism and good selectivity (similar to 1000-fold) against dihydrofolate reductase. (C) 2006 Elsevier Ltd. All rights reserved.