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.
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.
An Expeditious Synthesis of 6-Alkyl-5-(4′-amino-phenyl)-pyrimidine-2,4-diamines
作者:Daniel D. Holsworth、Michael Stier Jeremy、J. Edmunds、Wei He、Samuel Place、Samarendra Maiti
DOI:10.1081/scc-120024725
日期:2003.10
Abstract A rapid synthesis of a series of 6-alkyl substituted-5-(4′-amino-phenyl)-pyrimidine-2,4-diamines is described. These analogs were produced in good yields on moderate scale (ca. 8 g) without chromatography. Furthermore, the methodology described herein allows the production of 6-[ethyl, propyl, isopropyl, and isobutyl]-5-(4′-amino-phenyl)-pyrimidine-2,4-diamines in a more straightforward manner