[EN] FUSED HETEROARYL DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS [FR] DÉRIVÉS D'HÉTÉROARYLES FUSIONNÉS EN TANT QU'ANTAGONISTES DES RÉCEPTEURS DES ORÉXINES
Solvent-Controlled, Site-Selective <i>N</i>-Alkylation Reactions of Azolo-Fused Ring Heterocycles at N1-, N2-, and N3-Positions, Including Pyrazolo[3,4-<i>d</i>]pyrimidines, Purines, [1,2,3]Triazolo[4,5]pyridines, and Related Deaza-Compounds
作者:Brett C. Bookser、Michael I. Weinhouse、Aaron C. Burns、Andrew N. Valiere、Lino J. Valdez、Pawel Stanczak、Jim Na、Arnold L. Rheingold、Curtis E. Moore、Brian Dyck
DOI:10.1021/acs.joc.8b00540
日期:2018.6.15
coordinated to sodium indicated a potential role for the latter reinforcing the N2-selectivity. Limits of selectivity were tested with 26 heterocycles which revealed that N7 was a controlling element directing alkylations to favor N2 for pyrazolo- and N3 for imidazo- and triazolo-fused ring heterocycles when conducted in THF. Use of 1H-detected pulsed field gradient-stimulated echo (PFG-STE) NMR defined
使用NaHMDS作为碱,在THF中用碘甲烷将4-甲氧基-1 H-吡唑并[3,4- d ]嘧啶(1b)烷基化,选择性地提供了N2-甲基产物4-甲氧基-2-甲基-2 H-吡唑并[3,相对于N1-甲基产物(2b),以8/1的比例存在4- d ]嘧啶(3b)。有趣的是,在DMSO中进行反应使选择性逆转,以提供4/1的N1 / N2甲基化产物比例。产品3b的晶体结构N1和N7与钠配位表明后者可能增强N2选择性。用26个杂环测试了选择性极限,结果表明,当在THF中进行反应时,N7是控制烷基化的控制元素,对于吡唑并环而言,该环对吡唑并环反应有利于N2,对咪唑和三唑并稠合的环杂环则有利于N3。使用1个H-检测脉冲场梯度受激回波(PFG-STE)NMR确定的离子反应性复合物的分子量。该数据和DFT电荷分布计算表明,紧密离子对(CIP)或紧密离子对(TIP)控制THF中的烷基化选择性,而溶剂分离的离子对(SIPs)是DMSO中的反应性物质。
FUSED HETEROARYL DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS
申请人:Merck Sharp & Dohme Corp.
公开号:US20180370973A1
公开(公告)日:2018-12-27
The present invention is directed to fused heteroaryl derivative compounds which are antagonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to pharmaceutical compositions comprising these compounds. The present invention is also directed to uses of these pharmaceutical compositions in the prevention or treatment of such diseases in which orexin receptors are involved.