4-(3-bromo-4-methoxybenzylidene)-2-methyloxazol-5(4H)-one | 280140-77-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 4-(3-bromo-4-methoxybenzylidene)-2-methyloxazol-5(4H)-one
• 英文别名: 4-(3-bromo-4-methoxybenzylidene)-2-methyl-4H-oxazol-5-one；4-[(3-Bromo-4-methoxyphenyl)methylidene]-2-methyl-1,3-oxazol-5-one
• CAS: 280140-77-4
• 化学式: C₁₂H₁₀BrNO₃
• 分子量: 296.12
• InChiKey: CYSPCWIYWWXPKS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  47.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  4-(3-bromo-4-methoxybenzylidene)-2-methyloxazol-5(4H)-one 在 吡啶 、 盐酸 、 水 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 1,4-二氧六环 为溶剂， 生成
  参考文献：
  名称：

  Defining the Mechanism of Action and Enzymatic Selectivity of Psammaplin A against Its Epigenetic Targets

  摘要：

  Psammaplin A (11c) is a marine metabolite previously reported to be a potent inhibitor of two classes of epigenetic enzymes: histone deacetylases and DNA methyltransferases. The design and synthesis of a focused library based on the psammaplin A core has been carried out to probe the molecular features of this molecule responsible for its activity. By direct in vitro assay of the free thiol generated upon reduction of the dimeric psammaplin scaffold, we have unambiguously demonstrated that 11c functions as a natural prodrug, with the reduced form being highly potent against HDAC1 in vitro (IC50 0.9 nM). Furthermore, we have shown it to have high isoform selectivity, being 360-fold selective for HDAC1 over HDAC6 and more than 1000-fold less potent against HDAC7 and HDAC8. SAR around our focused library revealed a number of features, most notably the oxime functionality to be important to this selectivity. Many of the compounds show significant cytotoxicity in A549, MCF7, and W138 cells, with the SAR of cytotcodcity correlating to HDAC inhibition. Furthermore, compound treatment causes upregulation of histone acetylation but little effect on tubulin acetylation. Finally, we have found no evidence for 11c functioning as a DNMT inhibitor.

  DOI：

  10.1021/jm2016182
• 作为产物：
  描述：

  3-溴-4-甲氧基苯甲醛 、 N-乙酰甘氨酸 在 sodium acetate 、 乙酸酐 作用下， 反应 3.0h， 以75%的产率得到4-(3-bromo-4-methoxybenzylidene)-2-methyloxazol-5(4H)-one
  参考文献：
  名称：

  New synthetic strategies towards psammaplin A, access to natural product analogues for biological evaluation

  摘要：

  开发了新的合成路线以制备天然产物海绵抑素A（psammaplin A）及其多样化的类似物，这些类似物用于生物学评估。这些路线采用廉价且商业可获得的起始原料，并能合成目前报道方法难以获得的psammaplin A类似物。初步生物学研究表明，这些化合物是目前所发现的最强效的非肽类组蛋白去乙酰化酶1（HDAC1，I类）抑制剂。有趣的是，psammaplin A及其我们的合成类似物在体外显示出I类选择性，这对于设计和合成未来同工型选择性抑制剂具有重要意义。

  DOI：

  10.1039/c0ob00824a

文献信息

• Synthesis and Antiproliferative Activity of Marine Bromotyrosine Purpurealidin I and Its Derivatives
  作者：Chinmay Bhat、Polina Ilina、Irene Tilli、Manuela Voráčová、Tanja Bruun、Victoria Barba、Nives Hribernik、Katja-Emilia Lillsunde、Eero Mäki-Lohiluoma、Tobias Rüffer、Heinrich Lang、Jari Yli-Kauhaluoma、Paula Kiuru、Päivi Tammela

  DOI：10.3390/md16120481

  日期：——

  Purpurealidin I (1) showed no selectivity but its simplified pyridin-2-yl derivative (36) had the best improvement in selectivity (Selectivity index 4.1). This shows that the marine bromotyrosines are promising scaffolds for developing cytotoxic agents and the full understanding of the elements of their SAR and improving the selectivity requires further optimization of simplified bromotyrosine derivatives.

  报道了使用三氟乙酰氧基保护基及其二甲基化类似物（29）的海洋溴酪氨酸purpurealidin I（1）的首次全合成，以及缺少酪胺部分的16种简化的溴酪氨酸衍生物。评估了它们对人类恶性黑色素瘤细胞系（A-375）和正常皮肤成纤维细胞（Hs27）的细胞毒性，以及33种由嘌呤释放素激发的简化酰胺，并研究了其结构活性关系。没有酪胺部分的合成的简化类似物保留了细胞毒活性。Purpurealidin I（1）没有显示出选择性，但其简化的吡啶-2-基衍生物（36）在选择性方面的改善最大（选择性指数4.1）。