3-isobutyl-1-methyl-8-phenylxanthine | 137371-91-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 咪唑并嘧啶类
• 英文名称: 3-isobutyl-1-methyl-8-phenylxanthine
• 英文别名: 3-Isobutyl-1-methyl-8-phenyl-3,7-dihydro-purine-2,6-dione；1-methyl-3-(2-methylpropyl)-8-phenyl-7H-purine-2,6-dione
• CAS: 137371-91-6
• 化学式: C₁₆H₁₈N₄O₂
• 分子量: 298.345
• InChiKey: CKTSEYQIMGPXSD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  69.3
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-isobutyl-1-methyl-8-phenylxanthine 、 碘甲烷 在 potassium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 24.0h， 以68%的产率得到7-methyl-3-isobutyl-1-methyl-8-phenylxanthine
  参考文献：
  名称：

  Synthesis and Structure−Activity Relationships of 3,7-Dimethyl-1-propargylxanthine Derivatives, A_2A-Selective Adenosine Receptor Antagonists

  摘要：

  A series of 8-substituted derivatives of 3,7-dimethyl-1-propargylxanthine (DMPX) was synthesized and investigated as A(2A) adenosine receptor antagonists. Different synthetic strategies for the preparation of DMPX derivatives and analogues were explored. A recently developed synthetic procedure starting from 3-propargyl-5,6-diaminouracil proved to be the method of choice for the preparation of this type of xanthine derivatives. The novel compounds were investigated in radioligand binding studies at the high-affinity adenosine receptor subtypes A(1) and A(2A) and compared with standard A(2A) adenosine receptor antagonists. Structure-activity relationships were analyzed in detail. 8-Styryl-substituted DMPX derivatives were identified that exhibit high affinity and selectivity for A(2A) adenosine receptors, including 8-(m-chlorostyryl)-DMPX (CS-DMPX, K-i A(2A) = 13 nM, 100-fold selective), 8-(m-bromostyryl)-DMPX (BS-DMPX, K-i A(2A) = 8 nM, 146-fold selective), and 8-(3,4-dimethoxystyryl)-DMPX (K-i A(2A) = 15 nM, 167-fold selective). These and other novel compounds are superior to the standard A(2A) adenosine receptor antagonists KF17837 (4) and CSC (5) with respect to A(2A) affinity and/or selectivity.

  DOI：

  10.1021/jm970515+
• 作为产物：
  描述：

  4,5-二氨基-3-异丁基-1-甲基嘧啶-2,6-二酮 、 苯甲酸 在 1-羟基苯并三唑 、 sodium hydroxide 作用下， 以 二氯甲烷 、 甲醇 为溶剂， 生成 3-isobutyl-1-methyl-8-phenylxanthine
  参考文献：
  名称：

  8-Aryl xanthines potent inhibitors of phosphodiesterase 5

  摘要：

  In clinical studies, several inhibitors of phosphodiesterase 5 (PDE5) have demonstrated utility in the treatment of erectile dysfunction. We describe herein a series of 8-aryl xanthine derivatives which function as potent PDE5 inhibitors with, in many cases, high levels of selectivity versus other PDE isoforms. (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0960-894x(02)00480-8

文献信息

• 8-Aryl xanthines potent inhibitors of phosphodiesterase 5
  作者：Ruth Arnold、David Beer、Gurdip Bhalay、Urs Baettig、Stephen P Collingwood、Sarah Craig、Nicholas Devereux、Andrew Dunstan、Angela Glen、Sylvie Gomez、Sandra Haberthuer、Trevor Howe、Stephen Jelfs、Heinz Moser、Reto Naef、Paul Nicklin、David Sandham、Rowan Stringer、Katharine Turner、Simon Watson、Mauro Zurini

  DOI：10.1016/s0960-894x(02)00480-8

  日期：2002.9

  In clinical studies, several inhibitors of phosphodiesterase 5 (PDE5) have demonstrated utility in the treatment of erectile dysfunction. We describe herein a series of 8-aryl xanthine derivatives which function as potent PDE5 inhibitors with, in many cases, high levels of selectivity versus other PDE isoforms. (C) 2002 Elsevier Science Ltd. All rights reserved.
• Synthesis and Structure−Activity Relationships of 3,7-Dimethyl-1-propargylxanthine Derivatives, A_2A-Selective Adenosine Receptor Antagonists
  作者：Christa E. Müller、Uli Geis、Jo Hipp、Ulrike Schobert、Wolfram Frobenius、Maciej Pawłowski、Fumio Suzuki、Jesús Sandoval-Ramírez

  DOI：10.1021/jm970515+

  日期：1997.12.1

  A series of 8-substituted derivatives of 3,7-dimethyl-1-propargylxanthine (DMPX) was synthesized and investigated as A(2A) adenosine receptor antagonists. Different synthetic strategies for the preparation of DMPX derivatives and analogues were explored. A recently developed synthetic procedure starting from 3-propargyl-5,6-diaminouracil proved to be the method of choice for the preparation of this type of xanthine derivatives. The novel compounds were investigated in radioligand binding studies at the high-affinity adenosine receptor subtypes A(1) and A(2A) and compared with standard A(2A) adenosine receptor antagonists. Structure-activity relationships were analyzed in detail. 8-Styryl-substituted DMPX derivatives were identified that exhibit high affinity and selectivity for A(2A) adenosine receptors, including 8-(m-chlorostyryl)-DMPX (CS-DMPX, K-i A(2A) = 13 nM, 100-fold selective), 8-(m-bromostyryl)-DMPX (BS-DMPX, K-i A(2A) = 8 nM, 146-fold selective), and 8-(3,4-dimethoxystyryl)-DMPX (K-i A(2A) = 15 nM, 167-fold selective). These and other novel compounds are superior to the standard A(2A) adenosine receptor antagonists KF17837 (4) and CSC (5) with respect to A(2A) affinity and/or selectivity.