7-二甲氨基香豆素-4-乙酸 | 80883-54-1

• 物质功能分类: 生物化工 - 生化试剂 - 荧光成像
• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 中文名称: 7-二甲氨基香豆素-4-乙酸
• 中文别名: 7-(二甲氨基)香豆素-4-乙酸
• 英文名称: 7-(dimethylamino)coumarin-4-acetic acid
• 英文别名: 2-(7-(dimethylamino)-2-oxo-2H-chromen-4-yl)acetic acid；7-Dimethylaminocoumarin-4-acetic acid；2-[7-(dimethylamino)-2-oxochromen-4-yl]acetic acid
• CAS: 80883-54-1
• 化学式: C₁₃H₁₃NO₄
• mdl: MFCD00857826
• 分子量: 247.251
• InChiKey: HQMBLJOHUDYJLK-UHFFFAOYSA-N

物化性质

• 熔点：
  163.5-164.5 °C
• 沸点：
  497.6±45.0 °C(Predicted)
• 密度：
  1.334±0.06 g/cm3(Predicted)
• 溶解度：
  Soluble in N,N-dimethylformamide, methanol
• 最大波长(λmax)：
  370 nm (MeOH)

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  66.8
• 氢给体数：
  1
• 氢受体数：
  5

安全信息

• 海关编码：
  2932209090
• 危险性防范说明：
  P261,P280,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H332,H335
• 储存条件：
  2-8°C

制备方法与用途

7-二甲氨基香豆素-4-乙酸是一种荧光探针。

反应信息

• 作为反应物：
  描述：

  7-二甲氨基香豆素-4-乙酸 在 4-二甲氨基吡啶 、 N,N'-二环己基碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 生成 N-[(3-benzoxy-1,6-dimethyl-4-oxo-1,4-dihydropyridin-2-yl)methyl]-2-(7-(dimethylamino)-2-oxo-2H-chromen-4-yl)acetamide
  参考文献：
  名称：

  Design, Synthesis, Physicochemical Properties, and Evaluation of Novel Iron Chelators with Fluorescent Sensors

  摘要：

  The synthesis of a range of novel 3-hydroxypyridin-4-ones and 3-hydroxypyran-4-ones linked with different coumarin substituents is described. These compounds have been developed in order to provide a series of molecular probes for the quantification of intracellular labile iron pools. An evaluation of the effect of iron(III) on fluorescence intensity was undertaken. Chelation of iron(III) causes quenching of fluorescence. The relationship between iron(III) concentration and the extent of fluorescence quenching indicates that the metal is chelated in a complex with a metal-to-ligand stoichiometry of 1:3. The fluorescence of hydroxypyridinone compounds was found to be more efficiently quenched by iron(III) than were the hydroxypyranones. The metal-to-ligand stoichiometry at which maximum quenching is observed was found to depend on the site at which coumarin is attached. The efficiency of fluorescence quenching by iron(III) is markedly influenced by solvent polarity and pH. The permeability of two representative fluorescent chelators across human erythrocyte ghost membranes was investigated. The rate of permeability for a series of probes was found to be related to the corresponding ClogP values.

  DOI：

  10.1021/jm049751s
• 作为产物：
  描述：

  3-羟基-N,N-二甲基苯胺 在 三异丙氧基氯化钛 、 sodium hydroxide 作用下， 以 甲醇 、 水 、 甲苯 为溶剂， 生成 7-二甲氨基香豆素-4-乙酸
  参考文献：
  名称：

  带有芳香或杂芳族取代基的氨基酸，作为溶酶体唾液酸转运蛋白唾液酸的新型配体。

  摘要：

  Sial17是SLC17A5基因编码的唾液酸唾液酸转运蛋白，在Salla病（一种罕见的遗传性白细胞营养不良）中有缺陷。它还可以使外源唾液酸代谢结合，从而导致人类抗N-羟乙酰神经氨酸的自身抗体。在这里，我们通过虚拟筛选和结构-活性关系研究确定了一类新型的人类唾液酸配体。配体支架的特征在于具有自由羧酸盐，N-连接的芳族或杂芳族取代基和疏水性侧链的氨基酸主链。最有效的化合物45（LSP12-3129）抑制N-乙酰神经氨酸1（Neu5Ac的）传输以非竞争的方式与IC 50 ≈2.5μM，值大于400倍下ķ中号为的Neu5Ac。体外和分子对接研究将这种非竞争性特征归因于选择性抑制剂与面向细胞溶胶的构象中的Neu5Ac位点结合。此外，化合物45挽救了引起Salla病的致病突变体（R39C）的运输缺陷。这类新型的细胞渗透抑制剂为研究唾液酸的生理作用提供了工具，并有助于开发针对Salla疾病的药理伴侣。

  DOI：

  10.1021/acs.jmedchem.9b02119

文献信息

• Practical synthesis of maleimides and coumarin-linked probes for protein and antibody labelling via reduction of native disulfides
  作者：Hong Y. Song、Mun H. Ngai、Zhen Y. Song、Paul A. MacAry、Jonathan Hobley、Martin J. Lear

  DOI：10.1039/b904060a

  日期：——

  The cellular tracking, detection and sensing of protein or antibody movement are important aspects to advance our understanding of biomolecular interactions and activity. Antibodies modified with fluorescent dyes are also valuable tools, especially in immunology research. We describe here a proof-of-principle study of a new water-soluble coumarin probe with a maleimide thiol-reacting unit to fluorescently tag biomolecules. Highlights include: (1) a convenient water-based preparation of N-substituted maleimides, (2) a one-pot preparation of activated maleimido-esters, and (3) a bio-conjugation protocol for the selenol-promoted reduction of native disulfide bonds and the ‘site-specific’ labelling of antibodies with no significant loss of activity.

  细胞对蛋白质或抗体运动的追踪、检测和感知是增进我们对生物分子相互作用和活性理解的重要方面。用荧光染料修饰的抗体也是有价值的工具，特别是在免疫学研究中。这里我们描述了一项原理验证研究，涉及一种新的水溶性香豆素探针，该探针具有马来酰亚胺巯基反应单元，用于荧光标记生物分子。重点包括：（1）N-取代马来酰亚胺的便捷水基制备，（2）活化马来酰亚胺酯的一锅法制备，以及（3）硒醇促进的本征二硫键还原和无显著活性损失的抗体“位点特异性”标记的生物偶联方案。
• [EN] NOVEL COMPOUNDS AND USES<br/>[FR] NOUVEAUX COMPOSÉS ET UTILISATIONS
  申请人：UNIV QUEENSLAND

  公开号：WO2018215818A1

  公开（公告）日：2018-11-29

  The present invention relates to compounds of formula (I): wherein Q is O or S; R1 is a cyclic group substituted with at least one group X, wherein R1 may optionally be further substituted; X is any group comprising a carbonyl group; and R2 is a cyclic group substituted at the α-position, wherein R2 may optionally be further substituted. The present invention further relates to salts, solvates and prodrugs of such compounds, to pharmaceutical compositions comprising such compounds, and to the use of such compounds in the treatment and prevention of medical disorders and diseases, most especially by the dual action of NLRP3 inhibition and the stimulation of insulin secretion.

  本发明涉及以下式（I）的化合物：其中Q为O或S；R1为一个带有至少一个基团X的环状基团，其中R1可以选择性地进一步取代；X为包含羰基的任何基团；R2为在α位取代的环状基团，其中R2可以选择性地进一步取代。本发明还涉及这些化合物的盐、溶剂合物和前药，包括含有这些化合物的药物组合物，以及利用这些化合物在治疗和预防医学疾病和疾病中的应用，尤其是通过NLRP3抑制和促进胰岛素分泌的双重作用。
• SITE-SPECIFIC LABELING OF AFFINITY TAGS IN FUSION PROTEINS
  申请人：LIFE TECHNOLOGIES CORPORATION

  公开号：US20160025713A1

  公开（公告）日：2016-01-28

  The present invention provides methods and fluorescent compounds that facilitate detecting and labeling of a fusion protein by being capable of selectively binding to an affinity tag. The fluorescent compounds have the general formula A(B)n, wherein A is a fluorophore, B is a binding domain that is a charged chemical moiety, a protein or fragment thereof and n is an integer from 1-6 with the proviso that the protein or fragment thereof not be an antibody or generated from an antibody. The present invention provides specific fluorescent compounds and methods used to detect and label fusion proteins that contain a poly-histidine affinity tag. These compounds have the general formula A(L)m(B)n wherein A is a fluorophore, L is a linker, B is an acetic acid binding domain, m is an integer from 1 to 4 and n is an integer from 1 to 6. The acetic acid groups interact directly with the positively charged histidine residues of the affinity tag to effectively label and detect a fusion protein containing such an affinity tag when present in an acidic or neutral environment.

  本发明提供了一种方法和荧光化合物，通过选择性地与亲和标签结合，从而促进融合蛋白的检测和标记。所述荧光化合物具有通式A(B)n，其中A是荧光团，B是带电化学基团、蛋白质或其片段的绑定域，n是1-6的整数，但该蛋白质或其片段不是抗体或由抗体产生的。本发明还提供了特定的荧光化合物和方法，用于检测和标记含有聚组氨酸亲和标签的融合蛋白。这些化合物具有通式A(L)m(B)n，其中A是荧光团，L是连接器，B是醋酸绑定域，m是1到4的整数，n是1到6的整数。醋酸基团直接与亲和标签中的正电荷组氨酸残基相互作用，有效地标记和检测含有此类亲和标签的融合蛋白，当其存在于酸性或中性环境中时。
• Synthesis and Evaluation of Bioorthogonal Pantetheine Analogues for in Vivo Protein Modification
  作者：Jordan L. Meier、Andrew C. Mercer、Heriberto Rivera、Michael D. Burkart

  DOI：10.1021/ja063217n

  日期：2006.9.1

  target for the site-specific modification of fusion systems and new approaches to natural product proteomics. A detailed study of pantetheine analogues was performed in order to identify suitable partners for covalent protein labeling inside living cells. A rapid synthesis of pantothenamide analogues was developed and used to produce a panel which was evaluated for in vitro and in vivo protein labeling

  体内载体蛋白标记最近已成为融合系统的位点特异性修饰和天然产物蛋白质组学新方法的一个有吸引力的目标。对泛酰巯基乙胺类似物进行了详细研究，以确定活细胞内共价蛋白标记的合适伙伴。开发了泛酰胺类似物的快速合成，并用于生产用于体外和体内蛋白质标记评估的面板。动力学比较允许构建结构-活性关系，以查明载体蛋白标记选择的接头、染料和生物正交报告基因。最后，生物正交泛酰巯基乙胺类似物在体内以高特异性靶向载体蛋白，并在粗细胞裂解物中与报告分子进行化学选择性连接。
• Nucleoside Analogues with a 1,3-DieneFe(CO)₃Substructure: Stereoselective Synthesis, Configurational Assignment, and Apoptosis-Inducing Activity
  作者：Christoph Hirschhäuser、Juraj Velcicky、Daniel Schlawe、Erik Hessler、André Majdalani、Jörg-Martin Neudörfl、Aram Prokop、Thomas Wieder、Hans-Günther Schmalz

  DOI：10.1002/chem.201301672

  日期：2013.9.23

  The synthesis and stereochemical assignment of two classes of iron‐containing nucleoside analogues, both of which contain a butadieneFe(CO)3 substructure, is described. The first type of compounds are Fe(CO)3‐complexed 3′‐alkenyl‐2′,3′‐dideoxy‐2′,3′‐dehydro nucleosides (2,5‐dihydrofuran derivatives), from which the second class of compounds is derived by formal replacement of the ring oxygen atom

  描述了两类含丁二烯Fe（CO）3亚结构的含铁核苷类似物的合成和立体化学分配。第一类化合物是Fe（CO）3络合的3'-烯基-2'，3'-二脱氧-2'，3'-脱氢核苷（2,5-二氢呋喃衍生物），第二类化合物由CH 2正式取代环上的氧原子而得基团（碳环核苷类似物）。这些化合物是通过金属辅助引入核碱基以立体选择性的方式制备的。呋喃类中间体是由碳水化合物（如甲基-吡喃葡萄糖苷）制备的，而碳环化合物是通过分子内Pauson-Khand反应获得的。X射线结构分析证实了基于NMR和CD光谱的立体化学分配。生物学研究表明，某些复合物具有明显的凋亡诱导特性（通过不寻常的不依赖caspase 3的但依赖ROS的途径）。此外，还确定了一些构效关系，这也是设计和合成荧光素和生物素标记的结合物的前提。