4-(trimethylsilylethynyl)-6-methyl-2-pyrone | 502624-16-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 4-(trimethylsilylethynyl)-6-methyl-2-pyrone
• 英文别名: 2H-Pyran-2-one, 6-methyl-4-[(trimethylsilyl)ethynyl]-；6-methyl-4-(2-trimethylsilylethynyl)pyran-2-one
• CAS: 502624-16-0
• 化学式: C₁₁H₁₄O₂Si
• 分子量: 206.316
• InChiKey: ILCXSMZNUMWWDF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.18
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-(trimethylsilylethynyl)-6-methyl-2-pyrone 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 以50%的产率得到4-乙炔基-6-甲基-2H-吡喃-2-酮
  参考文献：
  名称：

  α-吡喃酮和嘧啶酮作为基于亲和力的蛋白质谱分析的光亲和探针的评价

  摘要：

  α-吡喃酮和嘧啶酮是天然产物和生物活性化合物中常见的结构基序。它们还显示出产生高能中间体的光化学，该中间体可能具有蛋白质反应性。合成了吡喃酮和嘧啶酮的文库，并评估了它们在几种粗细胞裂解物中用作基于非定向亲和力的蛋白质谱分析的光亲和探针的潜力。进一步的“原理证明”实验表明，适当支架上的嘧啶酮标签具有与二苯甲酮同样的蛋白质组标记能力。

  DOI：

  10.1021/jo201281c
• 作为产物：
  描述：

  4-羟基-6-甲基-2-吡喃酮 在 copper(l) iodide 、 palladium on activated charcoal 、 三溴化磷 、 三乙胺 、 三苯基膦 作用下， 以 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 生成 4-(trimethylsilylethynyl)-6-methyl-2-pyrone
  参考文献：
  名称：

  α-吡喃酮和嘧啶酮作为基于亲和力的蛋白质谱分析的光亲和探针的评价

  摘要：

  α-吡喃酮和嘧啶酮是天然产物和生物活性化合物中常见的结构基序。它们还显示出产生高能中间体的光化学，该中间体可能具有蛋白质反应性。合成了吡喃酮和嘧啶酮的文库，并评估了它们在几种粗细胞裂解物中用作基于非定向亲和力的蛋白质谱分析的光亲和探针的潜力。进一步的“原理证明”实验表明，适当支架上的嘧啶酮标签具有与二苯甲酮同样的蛋白质组标记能力。

  DOI：

  10.1021/jo201281c

文献信息

• Palladium-Catalysed Alkynylations of 2-Pyrone (Pyran-2-one) Halides
  作者：Ian J. Fairlamb、Feng Ju Lu、Jan Peter Schmidt

  DOI：10.1055/s-2003-42405

  日期：——

  The 2-pyrone sub-unit is found in a large number of natural products possessing broad-spectrum biological activity. As such, efficient synthetic methods are required to enable facile access to substituted 2-pyrone derivatives. Important conditions for the Sonogashira alkynylation of 4-bromo-6-methyl-2-pyrone (3a) have been developed, and compared against Negishi’s methodology. The best conditions for Sonogashira alkynylation was found to be the use of Pd/C with added Ph3P as the catalyst, in the presence of catalytic CuI, in a mixture of MeCN and Et3N at reflux. Using Negishi’s standard conditions, terminal alkynylzinc reagents, generated in situ from terminal alkynes with LDA or n-BuLi and subsequent reaction with anhydrous ZnBr2, were reacted with 3a at room temperature using Pd(PPh3)4 as the catalyst in THF.

  2-吡喃酮亚基存在于许多具有广谱生物活性的天然产物中。因此，需要高效的合成方法以便于制备取代的2-吡喃酮衍生物。已经开发出重要的条件用于4-溴-6-甲基-2-吡喃酮（3a）的Sonogashira炔基化反应，并与其基于Negishi的方法进行了比较。最佳的Sonogashira炔基化条件是使用添加了Ph3P的Pd/C作为催化剂，在含有催化量CuI的MeCN和Et3N混合物中回流。按照Negishi的标准条件，由端炔与LDA或n-BuLi反应生成并随后与无水ZnBr2反应生成的端炔基锌试剂，在室温下以Pd(PPh3)4作为催化剂在THF中与3a反应。
• Halogenated-2-pyrones in Sonogashira cross-coupling: limitations, optimisation and consequences for GC analysis of Pd-mediated reactions
  作者：Ian J.S. Fairlamb、Adam F. Lee、Faidjiba E.M. Loe-Mie、Elina H. Niemelä、Ciara T. O'Brien、Adrian C. Whitwood

  DOI：10.1016/j.tet.2005.07.102

  日期：2005.10

  (14) and to a lesser extent (E) and (Z)-ethyl 3-iodo-2-propenonate (16) under similar conditions. A more efficient quenching system (using excess dppe) has been developed to enable accurate determinations in product conversions. Alternatively, solvent and base (Et3N) removal in vacuo, or quench with saturated aqueous ammonium chloride, prevents further turnover in Sonogashira coupling. An ESI-MS study

  在CuI助催化剂的存在下，详细研究了Pd（PPh 3）2 Cl 2介导的4-溴-6-甲基-2-吡喃酮（5）与苯乙炔的Sonogashira偶联。Pd的浓度极大地影响了产品的产量，较低的Pd负载量有利于更高的转化率和更纯的交叉偶联产品。在仅用硅胶淬灭的样品（用CH 2 Cl 2洗脱）中观察到产物转化的后反应时间依赖性。在使用4-硝基溴苯（14）以及较小程度地（E）和（Z）-3-碘-2-丙酸乙酯（16）的反应中反映出了这种效果。）在相似的条件下。已经开发出了更有效的淬火系统（使用过量的dppe）以能够准确确定产品转化率。或者，在真空中除去溶剂和碱（Et 3 N），或用饱和氯化铵水溶液淬灭，可防止Sonogashira偶联剂进一步流失。对通过硅胶洗脱的样品进行了ESI-MS研究，以探讨可溶性Pd / Cu物质的性质。4-氯和6-氯-2-吡喃酮的Sonogashira交叉偶联（18和20，分别进行
• An efficient synthesis of 4-alkenyl/alkynyl-6-methyl-2-pyrones via Pd-catalysed coupling on 4-bromo-6-methyl-2-pyrone
  作者：Lester R. Marrison、Julia M. Dickinson、Razwan Ahmed、Ian J.S. Fairlamb

  DOI：10.1016/s0040-4039(02)02207-4

  日期：2002.12

  We herein report the efficient syntheses of biologically active 4-alkenyl- and 4-alkynyl-6-methyl-2-pyrones using Pd-catalysed coupling procedures. A palladium on carbon/triphenylphosphine combination is shown to be the most effective catalyst for Sonogashira cross-coupling of several terminal acetylenes with 4-bromo-6-methyl-2-pyrone in yields of up to 95%. (C) 2002 Elsevier Science Ltd. All rights reserved.
• Bioactive 4-substituted-6-methyl-2-pyrones with promising cytotoxicity against A2780 and K562 cell lines
  作者：Lester R. Marrison、Julia M. Dickinson、Ian J.S. Fairlamb

  DOI：10.1016/s0960-894x(02)00824-7

  日期：2002.12

  Bioactive synthetic 4-substituted-6-methyl-2-pyrones are reported. Various 4-substitutents have been incorporated using Pd-catalysed carbon-carbon bond coupling procedures. Preliminary screening of the 2-pyrones against human ovarian carcinoma (A2780) and human chronic myelogenous leukaemia (K562) cell lines show that 4-alkynyl-6-methyl-2-pyrones have excellent potential as anticancer agents. The pyrones demonstrate broad spectrum antimicrobial activities. (C) 2002 Elsevier Science Ltd. All rights reserved.
• 2-Pyrones possessing antimicrobial and cytotoxic activities
  作者：Ian J.S Fairlamb、Lester R Marrison、Julia M Dickinson、Feng-Ju Lu、Jan Peter Schmidt

  DOI：10.1016/j.bmc.2004.01.051

  日期：2004.8.1

  The 2-pyrone sub-unit is found in a number of natural products possessing broad spectrum biological activity. Such compounds are validated as being capable of binding to specific protein domains and able to exert a remarkable range of biological effects. In an effort to identify synthetic 2-pyrones with interesting biological effects, herein we report the synthesis and biological evaluation of 4-substituted-6-methyl-2-pyrones. Synthetic routes to 4-alkyl/alkenyl/aryl/alkynyl-6-methyl-2-pyrones have been developed utilising Sonogashira, Suzuki and Negishi cross-coupling starting from readily available 4-bromo-6-methyl-2-pyrone. Specific conditions for each organometallic protocol were required for successful cross-coupling. In particular, a triethylamine/acetonitrile-base/solvent mixture was crucial to Sonogashira alkynylation of 4-bromo-6-methyl-2-pyrone, whereas thallium carbonate was a mandatory base for the Suzuki cross-coupling of trialkylboranes. The 2-pyrones demonstrate potent inhibitory activity against Bacillus subtilis, Escherichia coli, Staphylococcus aureus, Schizosaccharomyces pombe and Botrytis cinerea. The growth inhibitory activities of selected 2-pyrones were determined in A2780 human ovarian carcinoma and K562 human chronic myelogenous leukaemia cell lines using an in vitro cell culture system (MTT assay). These studies demonstrate that 4-phenylethynyl-, 4-tetrahydropyranylpropargyl ether- and 4-ethynyl-6-methyl-2-pyrones have excellent potential as a new class of anticancer agents. (C) 2004 Elsevier Ltd. All rights reserved.