Synthesis of a heterocyclic aza-enediyne and its DNA-cleavage properties
摘要:
The benzimidazolium salt 2, incorporating an aza-enediyne moiety, has been prepared and is shown to be a very effective DNA-cleavage agent under mild physiological conditions. Its mechanism of action is currently under investigation but may involve the generation of a diradical intermediate, DNA alkylation, or both. (C) 2000 Elsevier Science Ltd. All rights reserved.
The regioselective synthesis of 2-alkynyl(benz)imidazoles was successfully achieved by Pd(ii)/Ag(i)-mediated dehydrogenative alkynylation of the corresponding (benz)imidazoles with terminal alkynes in an open vessel.
Preparation of 2-Substituted Benzimidazoles and Related Heterocycles Directly from Activated Alcohols Using TOP Methodology
作者:Richard J. Taylor、Cecilia D. Wilfred
DOI:10.1055/s-2004-829060
日期:——
A one-pot procedure for preparing 2-substituted benzimidazoles directly from activated alcohols in good to excellent yields using a new Tandem Oxidation Process (TOP) is reported. The use of this methodology to prepare 2-substituted benzoxazoles and 2-substituted benzothiazoles is also described.
Regiochemistry in Cobalt-Mediated Intermolecular Pauson–Khand Reactions of Unsymmetrical Internal Heteroaromatic Alkynes with Norbornene
作者:Benjamin E. Moulton、Adrian C. Whitwood、Anne K. Duhme-Klair、Jason M. Lynam、Ian J. S. Fairlamb
DOI:10.1021/jo200664m
日期:2011.7.1
comparable (2-phenylethynyl)heteroaromatic compounds with norbornene, mediated by Co2(CO)8 to give cyclopentenone products, were examined in this study. A synthetic protocol utilizing focused-microwave dielectric heating proved indispensable in the efficient synthesis of the PK cyclopentenone products. “π-Deficient” heteroaromatic substrates, e.g., 2-pyrones, and some “π-excessive” heteroaromatics such as
Co 2(CO)8介导的空间可比的(2-苯基乙炔基)杂芳族化合物与降冰片烯的分子间Pauson-Khand(PK)反应得到环戊烯酮产品,在这项研究中进行了检查。事实证明,利用聚焦微波介电加热的合成协议是有效合成PK环戊烯酮产品必不可少的。“π缺陷”杂芳族底物(例如2-吡喃酮)和一些“π过量”杂芳族化合物(例如2-和3-噻吩和2-呋喃)有利于新形成的环戊烯酮环中的β位置。其他π过量的杂芳族化合物(例如2-吡咯或2-吲哚)偏向α位。π-过量的3-吲哚衍生物给出了几乎相等的区域异构体混合物。氮在含吡啶基炔烃底物中的位置也影响PK反应的区域化学结果。拥有近端氮原子的2-吡啶基炔烃相对于4-吡啶基变异体会极大地影响区域选择性,有利于新形成的环戊烯酮环中的β位置。2-嘧啶炔基表现出与2-吡啶炔基相似的行为。不参与与降冰片烯进行PK反应的化合物包括(2-苯基乙炔基)咪唑和相关的苯并咪唑类,它们可促进原位生成的快速分解(μ2-炔)Co
[EN] DUAL ACTING FKBP12 AND FKBP52 INHIBITORS<br/>[FR] INHIBITEURS DE FKBP12 ET DE FKBP52 À DOUBLE ACTION
申请人:PLEX PHARMACEUTICALS INC
公开号:WO2019040463A1
公开(公告)日:2019-02-28
Provided are novel compounds of Formulas (I) and (II), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof, which are useful as dual FKBP12/FKABP inhibitors. Also provided are pharmaceutical compositions comprising the novel compounds of Formulas (I) and (II) and their use in treating Parkinson's disease.
Provided are novel compounds of Formulas (I) and (II), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof, which are useful as dual FKBP12/FKABP inhibitors. Also provided are pharmaceutical compositions comprising the novel compounds of Formulas (I) and (II) and their use in treating Parkinson's disease.