Methyl (1R,3R,4R,5R)-7'-<5-(azidomethyl)-7,7-difluoro-2,6-dioxa<3.1.1>bicyclohept-4-yl>-5'-heptenoate | 151567-15-6

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: Methyl (1R,3R,4R,5R)-7'-<5-(azidomethyl)-7,7-difluoro-2,6-dioxa<3.1.1>bicyclohept-4-yl>-5'-heptenoate
• CAS: 151567-15-6
• 化学式: C₁₄H₁₉F₂N₃O₄
• 分子量: 331.319
• InChiKey: WYWOGZBVMNIBHC-MYYYVSHBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.96
• 重原子数：
  23.0
• 可旋转键数：
  8.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.79
• 拓扑面积：
  93.52
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  Methyl (1R,3R,4R,5R)-7'-<5-(azidomethyl)-7,7-difluoro-2,6-dioxa<3.1.1>bicyclohept-4-yl>-5'-heptenoate 在 sodium hydroxide 、 三苯基膦 、 N,N'-羰基二咪唑 作用下， 以 四氢呋喃 、 甲醇 、 水 为溶剂， 反应 21.0h， 生成 (1R,3R,4R,5R)-7'-<5-<<<(n-Heptanoylamino)acetyl>amino>methyl>-7,7-difluoro-2,6-dioxa<3.1.1>bicyclohept-4-yl>-5'-heptenoic acid
  参考文献：
  名称：

  Synthesis of a thromboxane A2 receptor antagonist possessing the dioxabicycloheptane nucleus of TXA2

  摘要：

  The synthesis of the TXA2/PGH2 receptor antagonist 6 from the known chiral intermediate (-)-8 is described. The critical reaction is the inversion of C-5 in 11a and 11b by an intramolecular cyclization reaction induced by nucleophilic reagents as shown in structure 13a. The key intermediate 22 was prepared in 26.5 % yield in five steps. Diastereoselectivity is high in all but one of the steps, the Reformatsky reaction, which leads to equal amounts of 11a and 11b. The design of 6 is based on the dioxabicycloheptane nucleus characteristic of TXA2 (1), which has been stabilized by fluorination. To this nucleus the two side chains are attached in cis orientation, and the omega-chain is modified as reported for the receptor antagonist (-)-5, which in turn is an analogue of PGH2 (3). These changes in the side chains have the effect of converting the powerful agonist 2 (DFTXA2) into a receptor antagonist devoid of agonist activity, which binds to the receptor with nanomolar affinity. These findings lend support to the view of a single TXA2/PGH2 receptor.

  DOI：

  10.1021/jo00073a035
• 作为产物：
  描述：

  Methyl (1R,3R,4R,5R)-7'-<5-(hydroxymethyl)-7,7-difluoro-2,6-dioxa<3.1.1>bicyclohept-4-yl>-5'-heptenoate 在 吡啶 、 sodium azide 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 0.08h， 生成 Methyl (1R,3R,4R,5R)-7'-<5-(azidomethyl)-7,7-difluoro-2,6-dioxa<3.1.1>bicyclohept-4-yl>-5'-heptenoate
  参考文献：
  名称：

  Synthesis of a thromboxane A2 receptor antagonist possessing the dioxabicycloheptane nucleus of TXA2

  摘要：

  The synthesis of the TXA2/PGH2 receptor antagonist 6 from the known chiral intermediate (-)-8 is described. The critical reaction is the inversion of C-5 in 11a and 11b by an intramolecular cyclization reaction induced by nucleophilic reagents as shown in structure 13a. The key intermediate 22 was prepared in 26.5 % yield in five steps. Diastereoselectivity is high in all but one of the steps, the Reformatsky reaction, which leads to equal amounts of 11a and 11b. The design of 6 is based on the dioxabicycloheptane nucleus characteristic of TXA2 (1), which has been stabilized by fluorination. To this nucleus the two side chains are attached in cis orientation, and the omega-chain is modified as reported for the receptor antagonist (-)-5, which in turn is an analogue of PGH2 (3). These changes in the side chains have the effect of converting the powerful agonist 2 (DFTXA2) into a receptor antagonist devoid of agonist activity, which binds to the receptor with nanomolar affinity. These findings lend support to the view of a single TXA2/PGH2 receptor.

  DOI：

  10.1021/jo00073a035