6-(Dimethylamino)-7-fluoro-2-methyl-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid | 82419-58-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: 6-(Dimethylamino)-7-fluoro-2-methyl-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid
• CAS: 82419-58-7
• 化学式: C₁₅H₁₅FN₂O₄
• 分子量: 306.294
• InChiKey: LWGYMXVMNRENTK-UHFFFAOYSA-N

物化性质

• 熔点：
  233-235 °C(Solv: ethanol (64-17-5))
• 沸点：
  510.4±50.0 °C(Predicted)
• 密度：
  1.47±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  22
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  70.1
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  7,8-二氟-2,3-二氢-3-甲基-4-氢恶嗪 在 盐酸 作用下， 以 溶剂黄146 、 二甲基亚砜 为溶剂， 反应 8.0h， 生成 6-(Dimethylamino)-7-fluoro-2-methyl-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid
  参考文献：
  名称：

  Synthesis and antibacterial activities of substituted 7-oxo-2,3-dihydro-7H-pyrido(1,2,3-de)(1,4)benzoxazine-6-carboxylic acids.

  摘要：

  作为寻找新的合成抗菌剂以对抗全身感染的一部分，合成了多种7-氧代-2,3-二氢-7H-吡啶并[1,2,3-de][1,4]苯并噁嗪-6-羧酸类似物。在合成的新化合物中，9-氟-3-甲基-10-(4-甲基-1-哌嗪基)-7-氧代-2,3-二氢-7H-吡啶并[1,2,3-de][1,4]苯并噁嗪-6-羧酸（DL-8280）显示出对革兰氏阳性和阴性病原体，包括铜绿假单胞菌的强效抗菌活性，并且其代谢情况在单独的实验中显示为有利。

  DOI：

  10.1248/cpb.32.4907

文献信息

• Photoreactivity of biologically active compounds. XVIII. Photostability of ofloxacin in the solid state and in a tablet formulation
  作者：Tonnesen, Hanne Hjorth、Brunsvik、Loseth、Bergh、Gederaas

  DOI：10.1691/ph.2007.2.5184

  日期：——

  The photostability of ofloxacin in the solid state has been investigated. The change in colour of uncoated and film coated ofloxacin tablets and compressed ofloxacin was studied as a function of irradiance level and total exposure energy. The degradation of ofloxacin in the various preparations was quantified by HPLC and the antimicrobial activity was determined for selected tablets. The structure of two main degradation products from ofloxacin in the solid state has been postulated from LC-MS analysis. Both products have an absorption cut-off below 400 nm and cannot explain the observed change in tablet colour. There was no apparent relationship between the change in colour and the loss of active substance or antibacterial activity for the preparations investigated. The change in colour was easily detectable at rather low exposure levels. Apparently, there was a difference in light sensitivity between the two film-coated tablet batches investigated. The results obtained were partly dependent on the conditions within the radiation chamber (e.g. exposure time and irradiance level), which emphasizes the importance of testing the samples under various conditions unless the results are unequivocal. The tablets were sensitive to visible light although ofloxacin only has a neglectible absorption above 400 nm. The film coated ofloxacin tablets did, however, absorb above 400 nm with a cut-off at approximately 520 nm. A change in tablet coating to include a component that filters visible light in addition to UV radiation might provide a solution to the discolouration problem and prevent batch to batch variations with respect to light sensitivity.

  固态氧氟沙星的光稳定性已被研究。在不同的辐照水平和总曝光能量下，对未包衣和薄膜包衣的氧氟沙星片以及压制氧氟沙星的颜色变化进行了研究。通过高效液相色谱法量化了各制剂中氧氟沙星的降解程度，并测定了选定片剂的抗菌活性。根据液相色谱-质谱分析，推断出固态氧氟沙星的两个主要降解产物的结构。这两种产物在400纳米以下都有吸收截止，无法解释片剂颜色的变化。在研究的制剂中，颜色的变化与有效成分的损失或抗菌活性的丧失之间没有明显的关系。在相当低的曝光水平下，颜色的变化很容易被检测到。显然，在调查的两批发薄膜包衣片中，对光的敏感性存在差异。所得结果部分依赖于辐射室内的条件（例如曝光时间和辐照水平），这强调了在结果不明确时，在各种条件下测试样本的重要性。尽管氧氟沙星在400纳米以上的吸收可以忽略不计，但片剂对可见光敏感。然而，薄膜包衣的氧氟沙星片在约520纳米处有吸收截止。改变片剂包衣以包括一个过滤可见光和紫外线的成分，可能会解决褪色问题，并防止批次间关于光敏感性的变化。
• Benzoxazine derivatives
  申请人：DAIICHI SEIYAKU CO., LTD.

  公开号：EP0047005B1

  公开（公告）日：1984-11-14
• HAYAKAWA, ISAO;HIRAMITSU, TOKIYUKI;TANAKA, YOSHIAKI, CHEM. AND PHARM. BULL., 1984, 32, N 12, 4907-4913
  作者：HAYAKAWA, ISAO、HIRAMITSU, TOKIYUKI、TANAKA, YOSHIAKI

  DOI：——

  日期：——
• US4382892A
  申请人：——

  公开号：US4382892A

  公开（公告）日：1983-05-10