2-chloro-7-iodo-3-methyl-6-phenyl-furo[2,3-b]pyrazine | 1369514-37-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: 2-chloro-7-iodo-3-methyl-6-phenyl-furo[2,3-b]pyrazine
• CAS: 1369514-37-3
• 化学式: C₁₃H₈ClIN₂O
• 分子量: 370.577
• InChiKey: BCPMCSQKEDXIAH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.46
• 重原子数：
  18.0
• 可旋转键数：
  1.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  38.92
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  2-chloro-7-iodo-3-methyl-6-phenyl-furo[2,3-b]pyrazine 在 N-甲基吗啉 、 sodium chlorite 、 sodium periodate 、 四氧化锇 、 sodium dihydrogenphosphate dihydrate 、 2-甲基-2-丁烯 、 水 、 palladium diacetate 、 caesium carbonate 、 对甲苯磺酸 、 4,5-双二苯基膦-9,9-二甲基氧杂蒽 作用下， 以 四氢呋喃 、 水 、 丙酮 、 叔丁醇 为溶剂， 反应 8.92h， 生成 methyl 2-isobutyramido-3-methyl-6-phenylfuro[3,2-b]pyrazine-7-carboxylate
  参考文献：
  名称：

  Synthesis of functionalized furopyrazines as restricted dipeptidomimetics

  摘要：

  Herein, an efficient synthetic approach to a furopyrazine scaffold with four points of diversity, starting from 2(1H)-pyrazinones, with dipeptomimetic properties, is presented. R-groups corresponding to amino acid side chains were introduced during the 2(1H)-pyrazinone and subsequent furopyrazine formation. The furopyrazine scaffold was further functionalized with an amino- and a carboxy-terminus resulting in a conformationally restricted dipeptidomimetic scaffold. The carboxy-terminus was introduced via a chemoselective vinylation of the 7-position followed by oxidative cleavage, while the amino-terminus was obtained via Buchwald-Hartwig amidation of the 2-position of the scaffold. The versatility of the synthetic method was demonstrated by the synthesis of a small library of diversely substituted furopyrazines having various amino acid side chains on the four points of diversity. Evaluation with an X-ray structure of the scaffold and computational analysis supports the exploitation of the furopyrazine scaffold as a restricted dipeptide mimic, which can mimic the two central residues of a beta-turn. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.02.022
• 作为产物：
  描述：

  5-chloro-1-(4-methoxybenzyl)-6-methyl-3-(phenylethynyl)pyrazin-2(1H)-one 在 碘 作用下， 以 二氯甲烷 为溶剂， 反应 0.25h， 以80%的产率得到2-chloro-7-iodo-3-methyl-6-phenyl-furo[2,3-b]pyrazine
  参考文献：
  名称：

  Synthesis of functionalized furopyrazines as restricted dipeptidomimetics

  摘要：

  Herein, an efficient synthetic approach to a furopyrazine scaffold with four points of diversity, starting from 2(1H)-pyrazinones, with dipeptomimetic properties, is presented. R-groups corresponding to amino acid side chains were introduced during the 2(1H)-pyrazinone and subsequent furopyrazine formation. The furopyrazine scaffold was further functionalized with an amino- and a carboxy-terminus resulting in a conformationally restricted dipeptidomimetic scaffold. The carboxy-terminus was introduced via a chemoselective vinylation of the 7-position followed by oxidative cleavage, while the amino-terminus was obtained via Buchwald-Hartwig amidation of the 2-position of the scaffold. The versatility of the synthetic method was demonstrated by the synthesis of a small library of diversely substituted furopyrazines having various amino acid side chains on the four points of diversity. Evaluation with an X-ray structure of the scaffold and computational analysis supports the exploitation of the furopyrazine scaffold as a restricted dipeptide mimic, which can mimic the two central residues of a beta-turn. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.02.022