[(7S)-7-methyl-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazin-7-yl]methanol | 1263188-69-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: [(7S)-7-methyl-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazin-7-yl]methanol
• 英文别名: [(7S)-7-methyl-2-nitro-5,6-dihydroimidazo[2,1-b][1,3]oxazin-7-yl]methanol
• CAS: 1263188-69-7
• 化学式: C₈H₁₁N₃O₄
• 分子量: 213.193
• InChiKey: XAEXLULUYTVGFW-QMMMGPOBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.1
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  93.1
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  [(7S)-7-methyl-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazin-7-yl]methanol 、 2-氟-5-三氟甲基吡啶 在 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 、 mineral oil 为溶剂， 反应 0.5h， 以64%的产率得到(7S)-7-methyl-2-nitro-7-({[5-(trifluoromethyl)pyridin-2-yl]oxy}methyl)-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine
  参考文献：
  名称：

  Heteroaryl ether analogues of an antileishmanial 7-substituted 2-nitroimidazooxazine lead afford attenuated hERG risk: In vitro and in vivo appraisal

  摘要：

  Previous investigation of the potent antileishmanial properties of antitubercular 7-substituted 2-nitroimidazo[2,1-b][1,3]oxazines with biaryl side chains led to our development of a new clinical candidate for visceral leishmaniasis (DNDI-0690). Within a collaborative backup program, a racemic monoaryl lead (3) possessing comparable activity in mice but a greater hERG liability formed the starting point for our pursuit of efficacious second generation analogues having good solubility and safety. Asymmetric synthesis and appraisal of its enantiomers first established that chiral preferences for in vivo efficacy were species dependent and that neither form afforded a reduced hERG risk. However, in line with our findings in a structurally related series, less lipophilic heteroaryl ethers provided significant solubility enhancements (up to 16-fold) and concomitantly attenuated hERG inhibition. One promising pyridine derivative (49) displayed 100% oral bioavailability in mice and delivered a 96% parasite burden reduction when dosed at 50 mg/kg in a Leishmania donovani mouse model of visceral leishmaniasis.

  DOI：

  10.1016/j.ejmech.2020.112914
• 作为产物：
  描述：

  4-碘-2-甲基丁-1-烯 在 吡啶 、 咪唑 、 盐酸 、 四氧化锇 、 水 、 sodium hydride 、 potassium carbonate 、 N-甲基吗啉氧化物 作用下， 以 甲醇 、 乙醇 、 正己烷 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 276.5h， 生成 [(7S)-7-methyl-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazin-7-yl]methanol
  参考文献：
  名称：

  7-Substituted 2-Nitro-5,6-dihydroimidazo[2,1-b][1,3]oxazines: Novel Antitubercular Agents Lead to a New Preclinical Candidate for Visceral Leishmaniasis

  摘要：

  Within a backup program for the clinical investigational agent pretomanid (PA-824), scaffold hopping from delamanid inspired the discovery of a novel class of potent antitubercular agents that unexpectedly possessed notable utility against the kinetoplastid disease visceral leishmaniasis (VL). Following the identification of delamanid analogue DNDI-VL-2098 as a VL preclinical candidate, this structurally related 7 substituted 2-nitro-5,6-dihydroimidazo [2,1-b][1,3]oxazine class was further explored, seeking efficacious backup compounds with improved solubility and safety. Commencing with a biphenyl lead, bioisosteres formed by replacing one phenyl by pyridine or pyrimidine showed improved solubility and potency, whereas more hydrophilic side chains reduced VL activity. In a Leishmania donovani mouse model, two racemic phenylpyridines (71 and 93) were superior, with the former providing >99% inhibition at 12.5 mg/kg (b.i.d., orally) in the Leishmania infantum hamster model. Overall, the 7R enantiomer of 71 (79) displayed more optimal efficacy, pharmacokinetics, and safety, leading to its selection as the preferred development candidate.

  DOI：

  10.1021/acs.jmedchem.7b00034

文献信息

• NITROIMIDAZOOXAZINE AND NITROIMIDAZOOXAZOLE ANALOGUES AND THEIR USES
  申请人：Thompson Andrew Mark

  公开号：US20110028466A1

  公开（公告）日：2011-02-03

  The current invention pertains to nitroimidazooxazine and nitroimidazooxazole analogues, their methods of preparation, and uses of the compounds as treatment for Mycobacterium tuberculosis , for use as anti-tubercular drugs, for use as anti-protozoal agents with unexpectedly high potency against Trypanosoma cruzi or Leishmania donovani , and for the treatment of other microbial infections.

  当前的发明涉及硝基咪唑噁啉和硝基咪唑噁唑类似物，它们的制备方法，以及将这些化合物用作治疗结核分枝杆菌、用作抗结核药物、用作对克氏锥虫或唐氏利什曼原虫具有意外高效的抗原虫药剂，以及用于治疗其他微生物感染的用途。
• Novel Linker Variants of Antileishmanial/Antitubercular 7-Substituted 2-Nitroimidazooxazines Offer Enhanced Solubility
  作者：Andrew M. Thompson、Patrick D. O’Connor、Vanessa Yardley、Louis Maes、Delphine Launay、Stephanie Braillard、Eric Chatelain、Baojie Wan、Scott G. Franzblau、Zhenkun Ma、Christopher B. Cooper、William A. Denny

  DOI：10.1021/acsmedchemlett.0c00649

  日期：2021.2.11

  2-nitroimidazo[2,1-b][1,3]oxazines were previously shown to exhibit potent antileishmanial and antitrypanosomal activities, culminating in a new clinical investigational drug for visceral leishmaniasis (DNDI-0690). To offset development risks, we continued to seek further leads with divergent candidate profiles, especially analogues possessing greater aqueous solubility. Starting from an efficacious monoaryl

  抗结核病7-取代的 2-硝基咪唑并[2,1- b ][1,3] 恶嗪先前已被证明具有有效的抗寄生虫和抗锥虫活性，最终产生了一种用于治疗内脏利什曼病的新临床研究药物 (DNDI-0690)。为了抵消开发风险，我们继续寻找具有不同候选特征的进一步线索，特别是具有更大水溶性的类似物。从一种有效的单芳基衍生物开始，首先探索了用新型胺、酰胺和脲官能团替代侧链醚键；前一种替代物在体外和体内均具有良好的耐受性但引起溶解度的微小变化（通过不太稳定的苄胺除外），而后一组导致溶解度显着提高（高达 53 倍），但抗虫效力降低至少 10 倍。最终，我们发现O-氨基甲酸酯66在内脏利什曼病小鼠模型中提供了更高的溶解度、合适的代谢稳定性、出色的口服生物利用度 (100%) 和强大的体内功效（25 mg 时寄生虫负荷减少 97% /公斤）。
• Nitroimidazooxazine and nitroimidazooxazole analogues and their uses
  申请人：Global Alliance for TB Drug Development

  公开号：US08293734B2

  公开（公告）日：2012-10-23

  The current invention pertains to nitroimidazooxazine and nitroimidazooxazole analogues, their methods of preparation, and uses of the compounds as treatment for Mycobacterium tuberculosis, for use as anti-tubercular drugs, for use as anti-protozoal agents with unexpectedly high potency against Trypanosoma cruzi or Leishmania donovani, and for the treatment of other microbial infections.

  本发明涉及硝基咪唑氧噁啉和硝基咪唑氧唑类似物，其制备方法以及将这些化合物用作治疗结核分枝杆菌的药物、用作抗结核药物、用作抗原虫药物，对Trypanosoma cruzi或Leishmania donovani具有意外的高效性，并用于治疗其他微生物感染。
• NITROIMIDAZOOXAZINE ANALOGUES AND THEIR USES
  申请人：Global Alliance For Tb Drug Development

  公开号：EP2459570B1

  公开（公告）日：2014-12-24
• US8293734B2
  申请人：——

  公开号：US8293734B2

  公开（公告）日：2012-10-23