2-(difluoromethyl)oxazole-4-carboxylic acid | 1627894-70-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-(difluoromethyl)oxazole-4-carboxylic acid
• 英文别名: 2-(Difluoromethyl)-1,3-oxazole-4-carboxylic acid
• CAS: 1627894-70-5
• 化学式: C₅H₃F₂NO₃
• 分子量: 163.081
• InChiKey: PCMYMMDQSRAGMU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  63.3
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  tert-butyl N-[(4S)-4-(5-amino-2-fluorophenyl)-6-(fluoromethyl)-4-methyl-4H-1,3-oxazin-2-yl]-N-[(tert-butoxy)-carbonyl]carbamate 、 2-(difluoromethyl)oxazole-4-carboxylic acid 在 N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 生成
  参考文献：
  名称：

  Rational Design of Novel 1,3-Oxazine Based β-Secretase (BACE1) Inhibitors: Incorporation of a Double Bond To Reduce P-gp Efflux Leading to Robust Aβ Reduction in the Brain

  摘要：

  Accumulation of A beta peptides is a hallmark of Alzheimer's disease (AD) and is considered a causal factor in the pathogenesis of AD. beta-Secretase (BACE1) is a key enzyme responsible for producing A beta peptides, and thus agents that inhibit BACE1 should be beneficial for disease-modifying treatment of AD. Here we describe the discovery and optimization of novel oxazine-based BACE1 inhibitors by lowering amidine basicity with the incorporation of a double bond to improve brain penetration. Starting from a 1,3-dihydrooxazine lead 6 identified by a hit-to-lead SAR following HTS, we adopted a pKa lowering strategy to reduce the P-gp efflux and the high hERG potential leading to the discovery of 15 that produced significant A beta reduction with long duration in pharmacodynamic models and exhibited wide safety margins in cardiovascular safety models. This compound improved the brain-to-plasma ratio relative to 6 by reducing P-gp recognition, which was demonstrated by a P-gp knockout mouse model.

  DOI：

  10.1021/acs.jmedchem.8b00002
• 作为产物：
  描述：

  ethyl 2-(difluoromethyl)-1,3-oxazole-4-carboxylate 在 水 、 lithium hydroxide 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 3.0h， 以64.6%的产率得到2-(difluoromethyl)oxazole-4-carboxylic acid
  参考文献：
  名称：

  [EN] MODULATORS OF THE INTEGRATED STRESS PATHWAY
  [FR] MODULATEURS DE LA VOIE DE RÉPONSE INTÉGRÉE AU STRESS

  摘要：

  本文提供了用于调节综合应激反应（ISR）并治疗相关疾病、疾病和症状的化合物、组合物和方法。

  公开号：

  WO2019090076A1

文献信息

• [EN] 2-AMINO-6-METHYL-4,4a,5,6-TETRAHYDROPYRANO[3,4-d][1,3]THIAZIN-8a(8H)-YL-1,3-THIAZOL-4-YL AMIDES<br/>[FR] AMIDES 2-AMINO-6-MÉTHYL-4,4A,5,6-TÉTRAHYDROPYRANO[3,4-D][1,3]THIAZIN-8A(8H)-YL-1,3-THIAZOL-4-YLE
  申请人：PFIZER

  公开号：WO2015155626A1

  公开（公告）日：2015-10-15

  The present invention is directed to compounds, tautomers and pharmaceutically acceptable salts of the compounds which are disclosed, wherein the compounds have the structure of Formula (I), and the variable R1 is as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.

  本发明涉及所披露的化合物、互变异构体和药学上可接受的盐，其中所述化合物具有式(I)的结构，变量R1如规范中所定义。还披露了相应的药物组合物、治疗方法、合成方法和中间体。
• 2-Amino-3,5,5-trifluoro-3,4,5,6-tetrahydropyridines as BACE1 inhibitors for treatment of Alzheimer's disease
  申请人：H. LUNDBECK A/S

  公开号：US20150232449A1

  公开（公告）日：2015-08-20

  The present invention is directed to novel inhibitors of the BACE1 enzyme. Separate aspects of the invention are directed to pharmaceutical compositions comprising said compounds and uses of the compounds to treat disorders for which the reduction of Aβ deposits is beneficial such as Alzheimer's disease.

  本发明涉及新型BACE1酶抑制剂。发明的不同方面涉及包含所述化合物的药物组合物，以及利用这些化合物治疗减少Aβ沉积有益的疾病，如阿尔茨海默病。