首次探索了3 H-咪唑并[4,5- b ]吡啶衍生物的C2直接炔基化。稳定且易于获得的1,1-二溴-1-烯烃(亲电炔前体)用作偶联伙伴。简单的反应条件包括:廉价的铜催化剂(CuBr·SMe 2或Cu(OAc)2),膦配体(DPEphos)和1,4-二恶烷中的碱(LiO t Bu)在120°C的条件下。该C-H炔基化方法显露是与各种上两个耦合伙伴取代的兼容:杂芳烃和宝石-dibromoalkenes。该协议可以直接合成各种2-炔基-3 H-咪唑并[4,5- b]吡啶,一种在药物设计中有价值的支架。
首次探索了3 H-咪唑并[4,5- b ]吡啶衍生物的C2直接炔基化。稳定且易于获得的1,1-二溴-1-烯烃(亲电炔前体)用作偶联伙伴。简单的反应条件包括:廉价的铜催化剂(CuBr·SMe 2或Cu(OAc)2),膦配体(DPEphos)和1,4-二恶烷中的碱(LiO t Bu)在120°C的条件下。该C-H炔基化方法显露是与各种上两个耦合伙伴取代的兼容:杂芳烃和宝石-dibromoalkenes。该协议可以直接合成各种2-炔基-3 H-咪唑并[4,5- b]吡啶,一种在药物设计中有价值的支架。
Microwave-Assisted C-2 Direct Alkenylation of Imidazo[4,5-<i>b</i>]pyridines: Access to Fluorescent Purine Isosteres with Remarkably Large Stokes Shifts
作者:Tom Baladi、Anton Granzhan、Sandrine Piguel
DOI:10.1002/ejoc.201600166
日期:2016.5
We describe herein the first C-2 direct alkenylation of the valuable 3H-imidazo[4,5-b]pyridine promoted by microwave-assisted Pd/Cu co-catalysis. The reaction is rapid and compatible with a wide range of functional groups either on the imidazo[4,5-b]pyridine ring or on the styryl bromides thereby leading to the isolation of 23 compounds with moderate to good yields. The relevance of this method is
Inhibition of the phosphoinositide 3-kinase (PI3K)/AKT/mammalian target of rapamycin ( mTOR) signaling pathway is one of the most intensively studied approaches to cancer therapy. Rational design led to the identification of novel 7-amino-5-methyl-1,6-naphthyridin-2(1H)-one derivatives as potent PI3K/mTOR dual inhibitors. Design, synthesis and structure activity relationship are reported. (C) 2013 Elsevier Ltd. All rights reserved.
IMIDAZO[4,5-B]PYRIDINE DERIVATIVES AS PCSK9 INHIBITORS AND METHODS OF USE THEREOF
申请人:[en]ASTRAZENECA AB
公开号:WO2024126773A1
公开(公告)日:2024-06-20
A compound with the Formula (I): A-B-C wherein A is of the following formula (AA) and X1is selected from O, S or NH; X2is either N or C-H; X3is either N or C-RA3; wherein if X1is NH and X2is C-H then X3is C-RA3; B is of formula (B-1) or (B-2); C is selected from the group consisting of optionally substituted C6-10carboaryl, C5-6heteroaryl or C5-10heterocyclyl, and their use as PCSK9 inhibitors.