Facile synthesis of 3,5-diaryl-1,2,4-triazoles via copper-catalyzed domino nucleophilic substitution/oxidative cyclization using amidines or imidates as substrates
摘要:
Two methods for the synthesis of 3,5-diaryl-1,2,4-triazoles, both domino reactions, are reported. The first procedure, the Cu(OTf)(2)-catalyzed reaction between two amidines using NaHCO3 as a base, 1,10-phenanthroline as an additive and K-3[Fe(CN)(6)]/atmospheric oxygen as the oxidant, delivers 3,5-diaryl-1,2,4-triazoles with yields up to 68%. The second procedure for the synthesis of 3,5-diaryl-1,2,4-triazoles with yields up to 64% rests on the Cu(OTf)(2)-catalyzed reaction between two imidates and ammonium carbonate. This method features the formation of three bonds in a single synthetic step. (C) 2014 Elsevier Ltd. All rights reserved.
DNA 编码的组合化学文库 (DEL) 技术是一种结合遗传学和化学力量的方法,已成为药物发现的宝贵工具。骨骼多样性在 DEL 应用中起着至关重要的作用,并且在很大程度上依赖于新的 DNA 兼容化学反应。我们在此报告了一种系统发育化学转化策略,该策略使用 DNA 共轭苯甲酰肼作为 DEL 的唑类化学扩展中的通用前体。源自常见苯甲酰肼前体的 DNA 相容反应显示出优异的官能团耐受性,在温和的反应条件下合成各种唑类(包括恶二唑、噻二唑和三唑)时具有出色的效率。
Synthesis and SAR studies of novel 2-(6-aminomethylaryl-2-aryl-4-oxo-quinazolin-3(4H)-yl)acetamide Vasopressin V1b receptor antagonists
作者:Susan E. Napier、Jeffrey J. Letourneau、Nasrin Ansari、Douglas S. Auld、James Baker、Stuart Best、Leigh Campbell-Wan、Ray Chan、Mark Craighead、Hema Desai、Koc-Kan Ho、Cliona MacSweeney、Rachel Milne、J. Richard Morphy、Irina Neagu、Michael H.J. Ohlmeyer、Jack Pick、Jeremy Presland、Chris Riviello、Heather A. Zanetakos、Jiuqiao Zhao、Maria L. Webb
DOI:10.1016/j.bmcl.2011.04.022
日期:2011.6
Synthesis and structure–activity relationships (SAR) of a novel series of vasopressin V1b antagonists are described. 2-(6-Aminomethylaryl-2-aryl-4-oxo-quinazolin-3(4H)-yl)acetamide have been identified with low nanomolar affinity for the V1b receptor and good selectivity with respect to related receptors V1a, V2 and OT. Optimised compound 16 shows a good pharmacokinetic profile and activity in a mechanistic
evaluated as inhibitors of PI3kinase p110alpha. In this series, the thieno[3,2-d]pyrimidine derivative 15e showed the strongest inhibitory activity against p110alpha, with an IC(50) value of 2.0 nM, and inhibited proliferation of A375 melanoma cells with an IC(50) value of 0.58 microM. Moreover, 15e was found to be selective for p110alpha over other PI3K isoforms and protein kinases, making it the
2-(4-Oxo-4H-Quinazolin-3-Yl) Acetamides and Their Use as Vasopressin V3 Antagonists
申请人:Letourneau Jeffrey
公开号:US20080214553A1
公开(公告)日:2008-09-04
The present invention relates to 2-(4-oxo4H-quinazolin-3-yl)acetamicle derivatives of formula (I), and to their use as vasopressin V3 antagonists, particularly for the treatment of depression.
QUINAZOLINONE AND ISOQUINOLINONE ACETAMIDE DERIVATIVES
申请人:Letourneau Jeffrey
公开号:US20080090802A1
公开(公告)日:2008-04-17
Disclosed herein are quinazolinone derivatives of formula I,
or pharmaceutically acceptable salts or solvates thereof, wherein each of the substituents is given the definition as set forth in the specification and claims. Also disclosed are pharmaceutical compositions comprising quinazolinone or isoquinolinone according to the present invention and its use in therapy.
Quinazolinone and isoquinolinone acetamide derivatives
申请人:N.V. Organon
公开号:US07820649B2
公开(公告)日:2010-10-26
Disclosed herein are quinazolinone or isoquinolinone derivatives of formula I,
or pharmaceutically acceptable salts or solvates thereof, wherein each of the substituents is given the definition as set forth in the specification and claims. Also disclosed are pharmaceutical compositions comprising quinazolinone or isoquinolinone according to the present invention and its use in therapy.