benzoic acid 3,6,6-trimethyl-2-oxo-5,6-dihydro-4H-1,2-oxazine-4-yl ester | 742062-71-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: benzoic acid 3,6,6-trimethyl-2-oxo-5,6-dihydro-4H-1,2-oxazine-4-yl ester
• 英文别名: 4-benzoyloxy-3,6,6-trimethyl-5,6-dihydro-4H-[1,2]-oxazine 2-oxide；(3,6,6-Trimethyl-2-oxido-4,5-dihydrooxazin-2-ium-4-yl) benzoate
• CAS: 742062-71-1
• 化学式: C₁₄H₁₇NO₄
• 分子量: 263.293
• InChiKey: HUQMMJYXFCNLPW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  19
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  64.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  benzoic acid 3,6,6-trimethyl-2-oxo-5,6-dihydro-4H-1,2-oxazine-4-yl ester 在 N-溴代丁二酰亚胺(NBS) 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 生成 4-benzoyloxy-3-(bromomethyl)-6,6-dimethyl-5,6-dihydro-4H-[1,2]oxazine 2-oxide
  参考文献：
  名称：

  3-卤甲基化的环状硝酸盐：合成和亲核取代

  摘要：

  已经研究了将卤素原子引入与五元和六元环状硝酸盐（分别为异恶唑啉N-氧化物和恶嗪N-氧化物）的C-3原子相连的甲基中的方法。该方法包括将起始的3-甲基取代的环状硝酸酯甲硅烷基化，然后将所得的N-（甲硅烷氧基）烯胺卤化。尽管五元和六元环状烯胺对元素溴和碘的行为相似，但它们与NBS的反应产生了不同的产物，这些产物通过立体电子效应得以合理化。将获得的卤代硝酸盐与各种亲核试剂偶联，得到在C-3位官能化的新的硝酸盐。

  DOI：

  10.1016/j.tet.2011.04.078
• 作为产物：
  描述：

  苯甲酸甲酸酐 在 四氯化锡 作用下， 生成 benzoic acid 3,6,6-trimethyl-2-oxo-5,6-dihydro-4H-1,2-oxazine-4-yl ester
  参考文献：
  名称：

  从硝基乙烷合成 3-取代的 5,6-二氢-4H-1,2-恶嗪的简便方法

  摘要：

  描述了一种从硝基乙烷合成 C-3-官能化 5,6-二氢-4H-1,2-恶嗪的新型高效四步法。包括制备3-甲基取代的六元环状硝酸酯、3-(溴甲基)-取代的5,6-二氢-4H-1,2-恶嗪中间体、溴的亲核取代。来自硝基乙烷的目标 C-3-官能化恶嗪的总产率为 15-30%。

  DOI：

  10.1055/s-2006-958930

文献信息

• A General Metal-Assisted Synthesis of α-Halo Oxime Ethers from Nitronates and Nitro Compounds
  作者：Alexey Yu. Sukhorukov、Maria A. Kapatsyna、Tammy Lim Ting Yi、Hyeong Ryool Park、Yana A. Naumovich、Petr A. Zhmurov、Yulia A. Khomutova、Sema L. Ioffe、Vladimir A. Tartakovsky

  DOI：10.1002/ejoc.201403083

  日期：2014.12

  α-halo oxime ethers from readily accessible nitronates and nitro compounds via bis(oxy)enamines is reported. A key step of the strategy involves the unprecedented reaction of bis(oxy)enamines with a metal (Co, Zn, Mg, Mn) halide that acts as both a promoter and halide (Br, I, Cl) source. A variety of cyclic and acyclic ethers of α-halo oximes, including previously unavailable trimethylsilyl ethers of α-iodo

  报道了一种通过双（氧）烯胺从容易获得的硝基化合物和硝基化合物合成 α-卤代肟醚的方法。该策略的一个关键步骤涉及双（氧）烯胺与金属（Co、Zn、Mg、Mn）卤化物的前所未有的反应，该卤化物既作为促进剂又作为卤化物（Br、I、Cl）源。各种 α-卤代肟的环状和非环状醚，包括以前无法获得的 α-碘肟的三甲基甲硅烷基醚，已经以良好到高的产率合成。
• Tandem Deoxygenation/Halogenation of <i>N</i> -Oxides Under Acylation Conditions: Scope and In Situ IR Spectroscopic Study
  作者：Roman S. Malykhin、Ivan S. Golovanov、Sema L. Ioffe、Alexey Yu. Sukhorukov

  DOI：10.1002/ejoc.201900131

  日期：2019.7.14

  Unusual acylation of 1,2‐oxazine N‐oxides with acyl bromides produces 3‐bromomethyl‐substituted 2H‐1,2‐oxazines via the formation of molecular bromine as intermediate. The developed process was successfully exploited in the stereoselective synthesis of pharmaceutically relevant molecules.

  1,2-恶嗪N-氧化物与酰基溴的不寻常酰化反应会通过形成分子溴作为中间体来生成3-溴甲基-取代的2 H - 1,2-恶嗪。所开发的方法已成功地用于药物相关分子的立体选择性合成中。
• Acylation of Nitronates: [3,3]-Sigmatropic Rearrangement of <i>in Situ</i> Generated <i>N</i>-Acyloxy,<i>N</i>-oxyenamines
  作者：Aleksandr O. Kokuev、Yulia A. Antonova、Valentin S. Dorokhov、Ivan S. Golovanov、Yulia V. Nelyubina、Andrey A. Tabolin、Alexey Yu. Sukhorukov、Sema L. Ioffe

  DOI：10.1021/acs.joc.8b01652

  日期：2018.9.21

  affords α-acyloxyoxime derivatives via an umpolung functionalization of the α-position. This transformation involves generation of hitherto unknown N-acyloxy,N-oxyenamines and their fast [3,3]-sigmatropic rearrangement driven by the cleavage of the weak N–O bond. The reaction has a broad scope, and it is regioselective in the case of nitronates possessing nonsymmetrically substituted α-positions. Application

  硝酸酯的酰化通过α位的功能化而提供α-酰氧基肟衍生物。这种转变涉及到迄今为止未知的N-酰氧基，N-氧化烯胺的产生及其由弱N-O键断裂驱动的快速[3,3]-σ重排。该反应具有广泛的范围，并且在具有非对称取代的α-位的硝酸盐的情况下具有区域选择性。提出了将其应用于氨基甲酸酯和顺式-克拉烯酰胺的正式全合成。
• Identification of a novel 1,2 oxazine that can induce apoptosis by targeting NF-κB in hepatocellular carcinoma cells
  作者：Chaithanya Somu、Chakrabhavi Dhananjaya Mohan、Sachin Ambekar、Dukanya、Shobith Rangappa、CP Baburajeev、Alexey Sukhorukov、Srishti Mishra、Muthu K Shanmugam、Arunachalam Chinnathambi、Tahani Awad Alahmadi、Sulaiman Ali Alharbi、Basappa、Kanchugarakoppal S. Rangappa

  DOI：10.1016/j.btre.2020.e00438

  日期：2020.3

  Constitutive activation of NF-κB is associated with proinflammatory diseases and suppression of the NF-κB signaling pathway has been considered as an effective therapeutic strategy in the treatment of various cancers including hepatocellular carcinoma (HCC). Herein, we report the synthesis of 1,2 oxazines and their anticancer potential. The antiproliferative studies presented 3-((4-(1H-benzo[d]imidazol-2-yl)piperidin-1-yl)methyl)-4-phenyl-4,4a,5,6,7,7a-hexahydrocyclopenta [e][1,2]oxazine(3i) as a lead cytotoxic agent against HCC cells. Flow cytometric analysis showed that 3i caused a substantial increase in the subG1 cell population. Annexin-V-FITC-PI staining showed a significant increase in the percentage of apoptotic cells on treatment with 3i. Transfection with p65 siRNA significantly reduced the 3i induced DNA fragmentation indicating that 3i may primarily mediate its proapoptotic effects by abrogating the NF-κB signaling. In addition, treatment of HCC cells with 3i decreased the DNA binding ability of NF-κB and NF-κB-dependent luciferase expression. Taken together, this report introduces 1,2-oxazine that potently targets the NF-κB signaling pathway in HCC cells.
• Klenov, Michael S.; Lesiv, Alexey V.; Khomutova, Yulya A., Synthesis, 2004, # 8, p. 1159 - 1170
  作者：Klenov, Michael S.、Lesiv, Alexey V.、Khomutova, Yulya A.、Nesterov, Ivan D.、Ioffe, Sema L.

  DOI：——

  日期：——