3-bromo-5-[(pyridin-2-ylthio)methyl]isoxazole-4-carboxylic acid | 1027781-82-3

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• 英文名称: 3-bromo-5-[(pyridin-2-ylthio)methyl]isoxazole-4-carboxylic acid
• 英文别名: 3-Bromo-5-(pyridin-2-ylsulfanylmethyl)-1,2-oxazole-4-carboxylic acid；3-bromo-5-(pyridin-2-ylsulfanylmethyl)-1,2-oxazole-4-carboxylic acid
• CAS: 1027781-82-3
• 化学式: C₁₀H₇BrN₂O₃S
• 分子量: 315.147
• InChiKey: QRJSCRQUYJSXON-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  102
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  3-bromo-5-[(pyridin-2-ylthio)methyl]isoxazole-4-carboxylic acid 、 (S)-uracil polyoxin C methyl ester 在 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、 1-羟基苯并三唑一水物 、 三乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 24.0h， 以315 mg的产率得到methyl 1,5-dideoxy-1-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-5-{3-bromo-5-[(pyridin-2-ylthio)methyl]isoxazole-4-carbonylamino}-β-D-allofuranuronate
  参考文献：
  名称：

  Stereoselective Synthesis of Novel Uracil Polyoxin C Conjugates as Substrate Analogues of Chitin Synthase

  摘要：

  Stereoselective syntheses of both the natural (C5'-S) and unnatural (C5'-R) diastereoisomers of uracil polyoxin C methyl ester have been developed. The key stereocontrolled step involves nucleophilic addition of trimethylsilyl cyanide to the appropriate chiral sulfinimine derived from 2',3'-protected 5'-formyluridine and (S)-(-)-tert-butanesulfinamide or (R)-(+)-tert-butanesulfinamide, respectively. A variety of substrate mimics designed to function as inhibitors of chitin synthase have been synthesized by conjugation of the methyl ester of uracil polyoxin C (UPOC) with activated isoxazole carboxylic acids. Amide bond formation was accomplished via coupling of the amino functionality of UPOC methyl ester with a free isoxazole acid using HBTU or alternatively an isoxazole pentafluorophenyl ester. The substrate mimics incorporate features of the nucleoside-peptide antibiotics, the polyoxins and the nikkomycins, as well as features of the transition state structure expected during polymerization of the natural chitin synthase substrate uridine diphosphoryl-N-acetylglucosamine (UDP-GlcNAc), namely, a metal-binding site and glycosyl oxocarbenium ion mimic.

  DOI：

  10.1021/jo702564y
• 作为产物：
  描述：

  benzyl 3-bromo-5-[(pyridin-2-ylthio)methyl]isoxazole-4-carboxylate 在 三氯化硼 作用下， 以 正庚烷 、 二氯甲烷 为溶剂， 反应 1.0h， 以91%的产率得到3-bromo-5-[(pyridin-2-ylthio)methyl]isoxazole-4-carboxylic acid
  参考文献：
  名称：

  Stereoselective Synthesis of Novel Uracil Polyoxin C Conjugates as Substrate Analogues of Chitin Synthase

  摘要：

  Stereoselective syntheses of both the natural (C5'-S) and unnatural (C5'-R) diastereoisomers of uracil polyoxin C methyl ester have been developed. The key stereocontrolled step involves nucleophilic addition of trimethylsilyl cyanide to the appropriate chiral sulfinimine derived from 2',3'-protected 5'-formyluridine and (S)-(-)-tert-butanesulfinamide or (R)-(+)-tert-butanesulfinamide, respectively. A variety of substrate mimics designed to function as inhibitors of chitin synthase have been synthesized by conjugation of the methyl ester of uracil polyoxin C (UPOC) with activated isoxazole carboxylic acids. Amide bond formation was accomplished via coupling of the amino functionality of UPOC methyl ester with a free isoxazole acid using HBTU or alternatively an isoxazole pentafluorophenyl ester. The substrate mimics incorporate features of the nucleoside-peptide antibiotics, the polyoxins and the nikkomycins, as well as features of the transition state structure expected during polymerization of the natural chitin synthase substrate uridine diphosphoryl-N-acetylglucosamine (UDP-GlcNAc), namely, a metal-binding site and glycosyl oxocarbenium ion mimic.

  DOI：

  10.1021/jo702564y