(2-nonyl-[1,3]dioxolan-2-yl)-acetic acid methyl ester | 109873-29-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (2-nonyl-[1,3]dioxolan-2-yl)-acetic acid methyl ester
• 英文别名: methyl 2-(2-nonyl-1,3-dioxolan-2-yl)acetate；2-nonyl-1,3-dioxolane-2-acetic acid methyl ester；1,3-Dioxolane-2-acetic acid, 2-nonyl-, methyl ester
• CAS: 109873-29-2
• 化学式: C₁₅H₂₈O₄
• 分子量: 272.385
• InChiKey: JOZDBELKKDLIJJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  19
• 可旋转键数：
  11
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.93
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (2-nonyl-[1,3]dioxolan-2-yl)-acetic acid methyl ester 在 水 、 sodium hydroxide 作用下， 以94%的产率得到2-(2-nonyl-1,3-dioxolan-2-yl)acetic acid
  参考文献：
  名称：

  具有高对映体纯度的N-酰化-1-高丝氨酸内酯（AHL）群体感应分子的合成的稳健途径

  摘要：

  在以有用方式操纵细菌群体感应系统的方法的开发中，自然群体感应分子和相关结构类似物的现成可用性具有重要的生物学意义。在这封信中，我们报告了合成一系列N-酰化-1-高丝氨酸内酯（AHL）群体感应分子的稳健路线。至关重要的是，我们分析了最终AHL的对映体纯度，并在所有情况下均观察到了极佳的水平。

  DOI：

  10.1016/j.tetlet.2011.04.059
• 作为产物：
  描述：

  3-oxo-dodecanoic acid 在 对甲苯磺酸 作用下， 以 甲醇 、 乙醚 、 苯 为溶剂， 反应 24.5h， 生成 (2-nonyl-[1,3]dioxolan-2-yl)-acetic acid methyl ester
  参考文献：
  名称：

  细菌群体感应和生物膜形成的小分子抑制剂

  摘要：

  细菌在称为群体感应的过程中使用小分子（或自诱导剂）监测其局部种群密度。在这里，我们报告了一种新的、有效的天然细菌自体诱导剂 [N-酰基 l-高丝氨酸内酯 (AHL)] 的合成途径，该途径易于合成类似物。该路线已应用于非天然 AHL 库的首次合成。在细菌报告基因和生物膜测定中对这些化合物的评估揭示了一组有效的群体感应拮抗剂。这些配体将作为有价值的新工具来探索群体感应在细菌发病机制中的作用。

  DOI：

  10.1021/ja0530321

文献信息

• Design, synthesis and biological evaluation of non-natural modulators of quorum sensing in Pseudomonas aeruginosa
  作者：James T. Hodgkinson、Warren R. J. D. Galloway、Megan Wright、Ioulia K. Mati、Rebecca L. Nicholson、Martin Welch、David R. Spring

  DOI：10.1039/c2ob25198a

  日期：——

  with virulence. Thus the selective disruption of AHL-based quorum sensing represents a strategy to attenuate the pathogenicity of this bacterium. Herein we describe the design, synthesis and biological evaluation of a collection of structurally novel AHL mimics. A number of new compounds capable of modulating the LasR-dependent quorum sensing system of P. aeruginosa were identified, which could have

  许多种类的细菌采用称为群体感应的细胞间通讯机制，该机制由称为自诱导剂的小型可扩散信号分子介导。革兰氏阴性菌使用的最常见的一类自诱导剂是N-酰化-L-高丝氨酸内酯 (AHL)。铜绿假单胞菌是一种临床上重要的细菌，已知它使用 AHL 介导的群体感应系统来调节与毒力相关的各种过程。因此，选择性破坏基于 AHL 的群体感应代表了一种减弱这种细菌致病性的策略。在此，我们描述了一系列结构新颖的 AHL 模拟物的设计、合成和生物学评估。一些能够调节铜绿假单胞菌LasR 依赖性群体感应系统的新化合物被鉴定出来，这可能具有作为研究和操纵该信号通路的分子工具的价值。值得特别注意的是，这项研究提供了新型有效的群体感应拮抗剂，可强烈抑制这种病原菌野生型菌株中毒力因子的产生。
• Unusual Acetylation-Elimination in the Formation of Tetronate Antibiotics
  作者：Chompoonik Kanchanabanca、Weixin Tao、Hui Hong、Yajing Liu、Frank Hahn、Markiyan Samborskyy、Zixin Deng、Yuhui Sun、Peter F. Leadlay

  DOI：10.1002/anie.201301680

  日期：2013.5.27

  The identity and reactivity of the intermediates in agglomerin biosynthesis were established and the respective roles of the acetyltransferase Agg4 and the eliminating enzyme Agg5 identified (see scheme). It is proposed that enzymes homologous to Agg4 and Agg5 carry out the dehydration steps in all spirotetronate biosynthetic pathways. If this proves correct, it may assist engineering of these pathways

  建立了凝聚素生物合成中中间体的身份和反应性，并确定了乙酰转移酶Agg4和消除酶Agg5的各自作用（参见方案）。有人提出，与Agg4和Agg5同源的酶在所有螺酮生物合成途径中都执行脱水步骤。如果证明正确，则可以帮助设计这些途径。
• Synthesis and stability of small molecule probes for Pseudomonas aeruginosa quorum sensing modulation
  作者：Freija G. Glansdorp、Gemma L. Thomas、Jungjoon K. Lee、Jenny M. Dutton、George P. C. Salmond、Martin Welch、David R. Spring

  DOI：10.1039/b412802h

  日期：——

  The human pathogen Pseudomonas aeruginosa uses N-butyryl-L-homoserine lactone (BHL) and N-(3-oxododecanyl)-L-homoserine lactone (OdDHL) as small molecule intercellular signals in a phenomenon known as quorum sensing (QS). QS modulators are effective at attenuating P. aeruginosa virulence; therefore, they are a potential new class of antibacterial agent. The lactone in BHL and OdDHL is hydrolysed under physiological conditions. The hydrolysis proceeds at a rate faster than racemisation of the α-chiral centre. Non-hydrolysable, non-racemic analogues (small molecule probes) were designed and synthesised, replacing the lactone with a ketone. OdDHL analogues were found to be relatively unstable to decomposition unless they were difluorinated between the β-keto amide. Stability studies on a non-hydrolysable, cyclohexanone analogue indicated that racemisation of the α-chiral centre was relatively slow. This analogue was assayed to show that the L-isomer is likely to be responsible for the QS autoinducing activity in P. aeruginosa and Serratia strain ATCC39006.

  人类病原体铜绿假单胞菌（Pseudomonas aeruginosa）利用N-丁酰基-L-高丝氨酸内酯（BHL）和N-(3-氧代十二烷基)-L-高丝氨酸内酯（OdDHL）作为小分子细胞间信号，这种现象被称为群体感应（Quorum sensing，QS）。QS调节剂能有效减弱铜绿假单胞菌的毒力，因此，它们有可能成为一类新型抗菌剂。在生理条件下，BHL和OdDHL中的内酯环会发生水解，且水解速率快于α-手性中心的消旋化。设计并合成了非水解、非消旋的类似物（小分子探针），用酮基取代了内酯环。研究发现，除非在β-酮胺基之间进行二氟化，否则OdDHL类似物相对不稳定，易于分解。对一种非水解的环己酮类似物的稳定性研究显示，α-手性中心的消旋化相对较慢。该类似物的检测结果表明，L-异构体可能是铜绿假单胞菌和沙雷氏菌ATCC39006株中QS自诱导活性的原因。
• YAMAGUCHI, MASAHIKO;SHIBATO, KEISUKE;NAKASHIMA, HISATAKA;MINAMI, TORU, TETRAHEDRON, 44,(1988) N 15, C. 4767-4775
  作者：YAMAGUCHI, MASAHIKO、SHIBATO, KEISUKE、NAKASHIMA, HISATAKA、MINAMI, TORU

  DOI：——

  日期：——
• Methods of treating or preventing an infectious disease using an immunogenic conjugate of a gram-negative bacterial autoinducer molecule or antibodies that immunospecifically bind a gram-negative bacterial autoinducer molecule
  申请人：Kende S. Andrew

  公开号：US20070231839A1

  公开（公告）日：2007-10-04

  The present invention relates to an immunogenic conjugate comprising a carrier molecule coupled to an autoinducer of a Gram negative bacteria The immunogenic conjugate, when combined with a pharmaceutically acceptable carrier, forms a suitable vaccine for mammals to prevent infection by the Gram negative bacteria The immunogenic conjugate is also used to raise and subsequently isolate antibodies or binding portions thereof which are capable of recognizing and binding to the autoinducer. The antibodies or binding portions thereof are utilized in a method of treating infections, a method of inhibiting autoinducer activity, and in diagnostic assays which detect the presence of autoinducers or autoinducer antagonists in fluid or tissue samples. TABLE OF CONTENTS Page 1. FIELD OF THE INVENTION 1 2. BACKGROUND OF THE INVENTION 1 3. SUMMARY OF THE INVENTION 4 4. BRIEF DESCRIPTION OF THE DRAWINGS 7 5. DETAILED DESCRIPTION OF THE INVENTION 7 5.1 Isolation and Synthesis of Homoserine Lactones 7 5.2 Bacterial Autoinducer Conjugation to a Carrier 17 5.3 Generation of Antibodies to BAI Immunogenic conjugates 19 5.4 Therapeutic Uses of Immunogenic conjugates 22 or Antibodies Thereto 5.4.1 Administration and Formulation 22 5.4.2 Effective Dose 25 5.5 Diagnostic Methods 27 6. EXAMPLE: SYNTHESIS 32 Preparation of Compound C 32 Preparation of Compound D 32 Preparation of Compound 5 32 Preparation of Compound 6 33 Preparation of Compound 7 33 Preparation of Compound 8 33 Preparation of Compound 10 34 Preparation of Compound 11 34 Preparation of Compound 13 35 Preparation of Compound 12 35 Preparation of Compound 14 35 Preparation of Compound 15 36 Preparation of Compound 17 36 Preparation of Compound 21 37 Preparation of Compound 22 37 Preparation of Compound 24 38 Preparation of Compound 25 38 Preparation of Compound 27 38 Preparation of Compound 29 39 7. EXAMPLE: PRODUCTION OF BAI ANTIBODIES 39 7.1 PAI'S Role In Virulence 39 7.2 Anti-PAI Polyclonal Antibodies 40 7.3 Neutralization of PAI With Antibodies 40