N-cyclopentyl-9-ethyl-9H-purin-6-amine | 135394-08-0

• 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: N-cyclopentyl-9-ethyl-9H-purin-6-amine
• 英文别名: N-cyclopentyl-9-ethylpurin-6-amine
• CAS: 135394-08-0
• 化学式: C₁₂H₁₇N₅
• 分子量: 231.3
• InChiKey: CDVHQRUOORNLKE-UHFFFAOYSA-N

物化性质

• 沸点：
  432.9±48.0 °C(Predicted)
• 密度：
  1.36±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.58
• 拓扑面积：
  55.6
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  6-氯-9-乙基-9H-嘌呤 、 环戊胺 在 N,N-二异丙基乙胺 作用下， 以 乙醇 为溶剂， 以61%的产率得到N-cyclopentyl-9-ethyl-9H-purin-6-amine
  参考文献：
  名称：

  N6,9-Disubstituted adenines: potent, selective antagonists at the A1 adenosine receptor

  摘要：

  N6-Substituted 9-methyladenines are potent antagonists of the activation of A1 adenosine receptors. The present study assessed the effect of N6 and N-9 substituents on the binding of adenines to the A1 and A2 receptors, respectively, of rat brain cortex and striatum and also on the antagonism of the A2 receptor mediated stimulation of the adenylate cyclase of PC12 cells by N-ethyladenosine-5'-uronamide. The potency ranking of 9-substituted adenines varied directly with the hydrophobicity of the substituent: cyclopentyl > phenyl > tetrahydrofuryl > methyl > 2-hydroxyethyl. The 9-substituted adenines showed little selectivity for either receptor and the R enantiomer of N6-(1-phenyl-2-propyl)-9-methyladenine was only 4-fold more potent than the S enantiomer at the A1 receptor. An N6-cyclopentyl substituent increased potency at the A1 receptor and decreased potency at the A2 receptor, resulting in selectivity for the A1 receptor of up to 39-fold. The N6-cyclophenyl group completely overshadowed the effect of the hydrophobicity of the 9-substituent. A 2-chloro substituent did not alter the potency of an N6-substituted 9-methyladenine.

  DOI：

  10.1021/jm00113a029

文献信息

• Structure−Activity Relationships of Adenine and Deazaadenine Derivatives as Ligands for Adenine Receptors, a New Purinergic Receptor Family
  作者：Thomas Borrmann、Aliaa Abdelrahman、Rosaria Volpini、Catia Lambertucci、Edgars Alksnis、Simone Gorzalka、Melanie Knospe、Anke C. Schiedel、Gloria Cristalli、Christa E. Müller

  DOI：10.1021/jm9006356

  日期：2009.10.8

  Adenine derivatives bearing substituents in the 2-, N6-, 7-, 8-, and/or 9-position and a series of deazapurines were synthesized and investigated in [3H]adenine binding studies at the adenine receptor in rat brain cortical membrane preparations (rAde1R). Steep structure−activity relationships were observed. Substitution in the 8-position (amino, dimethylamino, piperidinyl, piperazinyl) or in the 9-position

  合成并研究了在[ 3]中带有2-，N 6-，7-，8和/或9位取代基的腺嘌呤衍生物和一系列脱氮嘌呤。H]腺嘌呤在大鼠大脑皮层膜制剂（rAde1R）中对腺嘌呤受体的结合研究。观察到陡峭的结构-活性关系。最好的取代是在8位（氨基，二甲基氨基，哌啶基，哌嗪基）或9位（2-吗啉代乙基）中带有碱性残基或在6位氨基官能团处引入极性取代基（羟基，氨基，乙酰基）是最好的修改。在稳定表达rAde1R的1321N1星形细胞瘤细胞的腺苷酸环化酶测定中，对所选腺嘌呤衍生物的功能评估表明，所研究的所有化合物均为激动剂或部分激动剂。在人类胚胎肾脏（HEK293）细胞的结合研究中还对化合物的子集进行了研究，该细胞还表达了高亲和力的腺嘌呤结合位点。人细胞系的结构亲和力关系与rAde1R相似，但不完全相同。特别是，N 6-乙酰腺嘌呤（25，K i大鼠：2.85μM; K i人：0.515μM）和8-氨基腺嘌呤（33，K i