5-(benzyloxy)-2-(bromomethyl)-4H-pyran-4-one

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 5-(benzyloxy)-2-(bromomethyl)-4H-pyran-4-one
• 英文别名: 2-(Bromomethyl)-5-phenylmethoxypyran-4-one
• 化学式: C₁₃H₁₁BrO₃
• 分子量: 295.133
• InChiKey: BNVSRDJXXWUCIN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  5-(benzyloxy)-2-(bromomethyl)-4H-pyran-4-one 在 三溴化硼 、 sodium hydride 作用下， 以 四氢呋喃 、 二氯甲烷 、 甲苯 、 mineral oil 为溶剂， 反应 49.0h， 生成 (E)-2-(3,4-dihydroxystyryl)-5-hydroxy-4H-pyran-4-one
  参考文献：
  名称：

  Synthesis of kojic acid-derived copper-chelating apoptosis inducing agents

  摘要：

  Three classes of kojic acid derivatives were synthesized and examined for their antiproliferative activity against HeLa cells. Both 8b and 11 co-treated with copper ion exhibited synergistic effect on the HeLa cell growth inhibition with GI(50) values of 11.9 and 7.1 mu M, respectively. Flow cytometric analysis of HeLa cells revealed that 11-Cu co-treatment induced the sub-G1 arrest in a dose-dependent manner, suggesting that the growth-inhibitory effect is attributed to DNA fragmentation. Moreover, western blot of HeLa cells cytosolic extracts displayed the cleavage of the 116-kDa protein poly(ADP-ribose) polymerase and activation of caspase-3 by the reduced level of the 32-kDa proenzyme, indicating that the caspase-dependent apoptotic pathway was involved. We further demonstrated that MAPK pathway regulators such as ERK and p38 were activated in response to 11-Cu co-treatment, suggesting that the intracellular oxidative stress was dramatically stimulated by the copper ion. Taken together, we have successfully synthesized kojic acid-derived copper-induced apoptotic agents.

  DOI：

  10.1007/s00044-012-0094-y
• 作为产物：
  描述：

  (5-(benzyloxy)-4-oxo-4H-pyran-2-yl)methyl methanesulfonate 在 sodium bromide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 0.33h， 以92%的产率得到5-(benzyloxy)-2-(bromomethyl)-4H-pyran-4-one
  参考文献：
  名称：

  Synthesis of kojic acid-derived copper-chelating apoptosis inducing agents

  摘要：

  Three classes of kojic acid derivatives were synthesized and examined for their antiproliferative activity against HeLa cells. Both 8b and 11 co-treated with copper ion exhibited synergistic effect on the HeLa cell growth inhibition with GI(50) values of 11.9 and 7.1 mu M, respectively. Flow cytometric analysis of HeLa cells revealed that 11-Cu co-treatment induced the sub-G1 arrest in a dose-dependent manner, suggesting that the growth-inhibitory effect is attributed to DNA fragmentation. Moreover, western blot of HeLa cells cytosolic extracts displayed the cleavage of the 116-kDa protein poly(ADP-ribose) polymerase and activation of caspase-3 by the reduced level of the 32-kDa proenzyme, indicating that the caspase-dependent apoptotic pathway was involved. We further demonstrated that MAPK pathway regulators such as ERK and p38 were activated in response to 11-Cu co-treatment, suggesting that the intracellular oxidative stress was dramatically stimulated by the copper ion. Taken together, we have successfully synthesized kojic acid-derived copper-induced apoptotic agents.

  DOI：

  10.1007/s00044-012-0094-y

文献信息

• Synthesis of novel 1,4-disubstituted 1,2,3-triazoles bearing organosilicon-sulfur groups via the click reaction sonocatalyzed by LaCu_xMn_1-xO₃ nanoparticles
  作者：Kazem D. Safa、Hanieh Mousazadeh

  DOI：10.1080/00397911.2016.1217339

  日期：2016.10.1

  ABSTRACT A highly efficient and environmentally friendly one-pot procedure for the synthesis of 1,2,3-triazoles by 1,3-dipolar cycloaddition of benzyl halides, terminal alkynes, and sodium azide over LaCuxMn1-xO3 perovskite oxides was developed. LaCu0.7Mn0.3O3 was found to be active with low catalyst loading under ultrasonic irradiation in aqueous media. The reaction was performed efficiently in the presence

  摘要 开发了一种高效、环保的一锅法，用于在 LaCuxMn1-xO3 钙钛矿氧化物上通过苄基卤化物、末端炔烃和叠氮化钠的 1,3-偶极环加成反应合成 1,2,3-三唑。发现 LaCu0.7Mn0.3O3 在水介质中超声辐照下具有低催化剂负载量的活性。在没有任何添加剂或碱的情况下，在纳米催化剂的存在下，反应有效地进行，反应时间显着减少。催化剂可以循环使用至少5次，对反应结果没有任何显着影响。此外，使用二硫化碳和三（三甲基甲硅烷基）甲基锂合成了一系列新型有机硅硫取代的 1,2,3-三唑衍生物。图形概要
• Sommelet–Hauser Rearrangement of Oxygen and Sulfur Containing Heteroaromatic Sulfonium Ylides
  作者：Makoto Yamamoto、Madoka Kakinuma、Shigeo Kohmoto、Kazutoshi Yamada

  DOI：10.1246/bcsj.62.958

  日期：1989.3

  A Sommelet–Hauser rearrangement of sulfonium ylides of 4H-pyran-4-ones, furan, and thiophenes are discussed. The sulfonium halides which were prepared from excess dimethyl sulfide with corresponding halides were treated with NaH or NaOR in a polar solvent to give moderate to good yields of rearranged products.

  讨论了 4H-吡喃 4-酮、呋喃和噻吩的锍叶立德的 Sommelet-Hauser 重排。由过量二甲硫与相应卤化物制备的锍卤化物在极性溶剂中用 NaH 或 NaOR 处理，得到中等至良好收率的重排产物。
• [EN] NOVEL DXR INHIBITORS FOR ANTIMICROBIAL THERAPY<br/>[FR] NOUVEAUX INHIBITEURS DE DXR POUR THÉRAPIE ANTIMICROBIENNE
  申请人：BAYLOR COLLEGE MEDICINE

  公开号：WO2011046920A1

  公开（公告）日：2011-04-21

  The present invention generally concerns particular methods and compositions for antimicrobial therapy. In particuarl embodiments, the compositions target DXR. In specific embodiments, the compositions are electron-deficient heterocyclic rings.

  本发明一般涉及特定的抗微生物治疗方法和组合物。在特定实施例中，这些组合物以DXR为靶点。在具体实施例中，这些组合物是电子亏缺的杂环环。
• Synthesis of new kojic acid based unnatural α-amino acid derivatives
  作者：C. Balakrishna、Nagaraju Payili、Satyanarayana Yennam、P. Uma Devi、Manoranjan Behera

  DOI：10.1016/j.bmcl.2015.07.099

  日期：2015.11

  method for the preparation of kojic acid based α-amino acid derivatives by alkylation of glycinate schiff base with bromokojic acids have been described. Using this method, mono as well as di alkylated kojic acid-amino acid conjugates have been prepared. This is the first synthesis of C-linked kojic acid-amino acid conjugate where kojic acid is directly linked to amino acid through a C–C bond.

  已经描述了通过用溴代苯甲酸将甘氨酸盐席夫碱烷基化来制备基于曲酸的α-氨基酸衍生物的有效方法。使用这种方法，已经制备了单以及二烷基化的曲酸-氨基酸缀合物。这是C-连接的曲酸-氨基酸共轭物的首次合成，其中曲酸通过C-C键直接与氨基酸连接。
• NOVEL DXR INHIBITORS FOR ANTIMICROBIAL THERAPY
  申请人：Song Yongcheng

  公开号：US20130065857A1

  公开（公告）日：2013-03-14

  The present invention generally concerns particular methods and compositions for antimicrobial therapy. In particular embodiments, the compositions target DXR. In specific embodiments, the compositions are electron-deficient heterocyclic rings.

  本发明通常涉及特定的抗微生物治疗方法和组合物。在特定实施例中，该组合物针对DXR。在具体实施例中，该组合物是电子不足的杂环环。