5-amino-1-(β-phenylethyl)-4-<3-(2-furyl)-1,2,4-triazol-5-yl>pyrazole | 159979-95-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 5-amino-1-(β-phenylethyl)-4-<3-(2-furyl)-1,2,4-triazol-5-yl>pyrazole
• 英文别名: 1-(β-phenylethyl)-4-[3(2-furyl)-1,2,4-triazol-5-yl]-5-amino pyrazole；4-[5-(furan-2-yl)-1H-1,2,4-triazol-3-yl]-2-(2-phenylethyl)pyrazol-3-amine
• CAS: 159979-95-0
• 化学式: C₁₇H₁₆N₆O
• 分子量: 320.354
• InChiKey: NFUFUJRZGLKODM-UHFFFAOYSA-N

物化性质

• 沸点：
  618.8±65.0 °C(Predicted)
• 密度：
  1.42±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  24
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  98.6
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  氰胺 、 5-amino-1-(β-phenylethyl)-4-<3-(2-furyl)-1,2,4-triazol-5-yl>pyrazole 在 N-甲基吡咯烷酮 、 对甲苯磺酸 作用下， 以20%的产率得到2-(2-呋喃基)-7-(2-苯基乙基)-7H-吡唑并[4,3-e][1,2,4]噻唑并[1,5-c]嘧啶-5-胺
  参考文献：
  名称：

  Pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidine Derivatives:  Potent and Selective A_2A Adenosine Antagonists

  摘要：

  A series of pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidine derivatives (10a-o,q,r), bearing alkyl and aralkyl chains on positions 7 and 8, were synthesized in the attempt to obtain potent and selective antagonists for the A(2A) adenosine receptor subtype. The compounds were tested in binding and functional assays to evaluate their potency for the A(2A) compared with the A(1) adenosine receptor subtype. In binding studies in rat brain membranes, most of the compounds showed affinity for A(2A) receptors in the low nanomolar range with a different degree of A(2A) versus A(1) selectivity. Comparison of N-7 (10a-d,h-o)- and N-8 (10e-g)-substituted pyrazolo derivatives indicates that N-7 substitution decreases the A(1) affinity with the concomitant increase of A(2A) selectivity. Specifically, the introduction of a 3-phenylpropyl group at pyrazolo nitrogen in position 7 (101) increased significantly the A(2A) selectivity, being 210-fold, while the A(2A) receptor affinity remained high (K-i = 2.4 nM). With regards to the affinity for A(2A) receptors, also the compound 10n, bearing in the 7-position a beta-morpholin-4-ylethyl group, deserves attention (K-i = 5.6 nM) even though the A(2A) selectivity (84-fold) was not as high as that of 101. Conversely, the compound 10m (N-7-4-phenylbutyl derivative) showed a remarkable selectivity (A(1)/A(2A) ratio = 129) associated with lower A(2A) affinity (K-i = 21 nM). In functional studies, most of the compounds examined reversed 5'-(N-ethylcarbamoyl)adenosine-induced inhibition of rabbit platelet aggregation inhibition which is a biological response mediated by the A(2A) receptor subtype. The compounds are potent and selective A(2A) antagonists which can be useful to elucidate the pathophysiological role of this adenosine receptor subtype. These compounds deserve to be further developed to assess their potential for treatment of neurodegenerative disorders such as Parkinson's disease.

  DOI：

  10.1021/jm950746l
• 作为产物：
  描述：

  2-呋喃甲酰肼 在 盐酸 作用下， 以 二苯醚 、 乙二醇甲醚 为溶剂， 反应 4.5h， 生成 5-amino-1-(β-phenylethyl)-4-<3-(2-furyl)-1,2,4-triazol-5-yl>pyrazole
  参考文献：
  名称：

  Pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidine Derivatives:  Potent and Selective A_2A Adenosine Antagonists

  摘要：

  A series of pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidine derivatives (10a-o,q,r), bearing alkyl and aralkyl chains on positions 7 and 8, were synthesized in the attempt to obtain potent and selective antagonists for the A(2A) adenosine receptor subtype. The compounds were tested in binding and functional assays to evaluate their potency for the A(2A) compared with the A(1) adenosine receptor subtype. In binding studies in rat brain membranes, most of the compounds showed affinity for A(2A) receptors in the low nanomolar range with a different degree of A(2A) versus A(1) selectivity. Comparison of N-7 (10a-d,h-o)- and N-8 (10e-g)-substituted pyrazolo derivatives indicates that N-7 substitution decreases the A(1) affinity with the concomitant increase of A(2A) selectivity. Specifically, the introduction of a 3-phenylpropyl group at pyrazolo nitrogen in position 7 (101) increased significantly the A(2A) selectivity, being 210-fold, while the A(2A) receptor affinity remained high (K-i = 2.4 nM). With regards to the affinity for A(2A) receptors, also the compound 10n, bearing in the 7-position a beta-morpholin-4-ylethyl group, deserves attention (K-i = 5.6 nM) even though the A(2A) selectivity (84-fold) was not as high as that of 101. Conversely, the compound 10m (N-7-4-phenylbutyl derivative) showed a remarkable selectivity (A(1)/A(2A) ratio = 129) associated with lower A(2A) affinity (K-i = 21 nM). In functional studies, most of the compounds examined reversed 5'-(N-ethylcarbamoyl)adenosine-induced inhibition of rabbit platelet aggregation inhibition which is a biological response mediated by the A(2A) receptor subtype. The compounds are potent and selective A(2A) antagonists which can be useful to elucidate the pathophysiological role of this adenosine receptor subtype. These compounds deserve to be further developed to assess their potential for treatment of neurodegenerative disorders such as Parkinson's disease.

  DOI：

  10.1021/jm950746l

文献信息

• ADENOSINE A3 RECEPTOR MODULATORS
  申请人：Baraldi Giovanni Pier

  公开号：US20070249641A1

  公开（公告）日：2007-10-25

  The compounds of the following formula: wherein R, R 2 , R 3 and A have the meanings given in the specification, are endowed with selective A 3 adenosine receptor antagonist activity. These compounds can be used in a pharmaceutical composition to treat disorders caused by excessive activation of the A 3 receptor, or can be used in a diagnostic application to determine the relative binding of other compounds to the A 3 receptor. The compounds can be labeled, for example with fluorescent or radiolabels, and the labels used in vivo or in vitro to determine the presence of tumor cells which possess a high concentration of adenosine A 3 receptors.

  以下化学式的化合物：其中R、R2、R3和A在说明书中给出的含义，具有选择性A3腺苷受体拮抗活性。这些化合物可以用于制备药物组合物，用于治疗由A3受体过度激活引起的疾病，或者可以用于诊断应用，以确定其他化合物与A3受体的相对结合。这些化合物可以被标记，例如用荧光或放射性标记，并在体内或体外用于确定具有高浓度腺苷A3受体的肿瘤细胞的存在。
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  公开号：US7271171B2

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