Characterization of mono- and diaminopyrimidine derivatives as novel, nonpeptide gonadotropin releasing hormone (GnRH) receptor antagonists
作者:David R Luthin、Yufeng Hong、Eileen Tompkins、Kenna L Anderes、Genevieve Paderes、Eugenia A Kraynov、Mary A Castro、Karen D Nared-Hood、Rosemary Castillo、Margaret Gregory、Haresh Vazir、John M May、Mark B Anderson
DOI:10.1016/s0960-894x(02)00756-4
日期:2002.12
A novel series of derivatives of mono- and diaminopyrimidines 1 potently displaced binding of a radiolabeled GnRH analogue to human and rat GnRH receptors. Analogues from these series competitively antagonized GnRH-stimulated increases in extracellular acidification in vitro and suppressed GnRH-mediated increases in circulating luteinizing hormone (LH) in castrated rats and testosterone in intact rats. These compounds or their analogues may be useful in treating sex hormone-dependent disease. (C) 2002 Elsevier Science Ltd. All rights reserved.
A Simple Synthetic Method for Tetraaza[3.3.3.3]meta- and paracyclopanes by Alkylation of<i>N</i>-Substituted Trifluoroacetamide
A simple and practical synthesis of the title compounds 1b and 2b is described. Alkylation of N-substituted trifluoroacetamides (5a and b) with appropriate dibromides (6 and 9) in the presence of sodium hydride in N,N-dimethylformamide at 100°C, or powdered potassium hydroxide in refluxing acetone, followed by removal of the trifluoroacetyl group and N-methylation of the resultant amines provides the desired 1b and 2b in 21 and 19 % overall yields, respectively, along with their lower and higher homologs.
to clarify the interaction or coordination ability of the C-F unit towards metal ions. The cage compounds 1 and 2 were prepared by direct coupling reactions between the appropriate diamines and dibromides, while bond isomers of the cage compounds were synthesized via fluorinated diaza[3.3]metacyclophanes. Complex formation with alkali metal cations, NH4+, and Ag+ ions has been assessed by picrate extraction