2-amino-6-[(cyclohexylethyl)oxy]purine

• 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: 2-amino-6-[(cyclohexylethyl)oxy]purine
• 英文别名: NU6023；O6-((2-cyclohexyl)ethyl)guanine；O6-Substituted Guanine Deriv. 30；6-(2-cyclohexylethoxy)-7H-purin-2-amine
• 化学式: C₁₃H₁₉N₅O
• 分子量: 261.327
• InChiKey: ZRURYXJTRCKFJS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  19
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  89.7
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  鸟嘌呤 在 溶剂黄146 、 三氯氧磷 作用下， 以 二甲基亚砜 、 1,2-二氯乙烷 、 PEG-2000 为溶剂， 反应 25.83h， 生成 2-amino-6-[(cyclohexylethyl)oxy]purine
  参考文献：
  名称：

  Hu, Yu Lin; Ge, Qiang; Lu, Ming, Bulletin of the Chemical Society of Ethiopia, 2010, vol. 24, # 3, p. 425 - 432

  摘要：

  DOI：

文献信息

• Effect of O6-Substituted Guanine Analogs on O6-methylguanine DNA-methyltransferase Expression and Glioblastoma Cells Viability
  作者：Patrick-Denis St-Coeur、Marc Cormier、Veronique LeBlanc、Pier Morin、Mohamed Touaibia

  DOI：10.2174/1573406412666160710210907

  日期：2016.12.22

  Background: Glioblastoma multiforme (GBM) is often associated with a poor survival prognostic for patients. The main reason seems to be the acquired or inherent resistance to the chemotherapeutic agent used to treat the tumor, temozolomide (TMZ). To this day, the most recognized pathway of resistance is the DNA Direct Repair pathway by the means of the protein O6- methylguanine DNA-methyltransferase (MGMT). Objectives: To design and synthesize a series of MGMT inhibitors that can sensitize GBM cells to TMZ. Methods: Twenty-five O6-alkyl, O6-aryl and O6-substituted-aryl guanine analogs including nine novel compounds were synthesized, characterized, analyzed by molecular docking and tested on the T98G GBM cells viability. Results: Following molecular modeling with MGMT, the newly designed compounds 19, 22, and 24 emerged as the most promising MGMT ligands and displayed modest cytotoxicity. Guanine analog (19), bearing a p-nitrobenzyl moiety, reduced considerably the O6-methylguanine DNAmethyltransferase expression level. When combined with TMZ (1), which is used as first line treatment for brain tumors, compounds 19, 22, and 24 decreased T98G cellsproliferation by 32%, 68% and 50%, respectively. TMZ (1) displayed negligible effect on the proliferation of these cells further supporting the notion that this cell model is resistant to this alkylating agent. Conclusion: Overall, these results notably highlight a group of MGMT inhibitors that warrants further exploration in the development of therapeutic options to circumvent TMZ resistance in brain tumors.

  背景：胶质母细胞瘤（GBM）通常与患者的生存预后不良相关。主要原因似乎是患者对用于治疗该肿瘤的化疗药物替莫唑胺（TMZ）产生了获得性或固有的耐药性。迄今为止，最被认可的耐药途径是通过O6-甲基鸟嘌呤DNA甲基转移酶（MGMT）进行的直接DNA修复途径。 目的：设计并合成一系列MGMT抑制剂，以增强GBM细胞对TMZ的敏感性。 方法：合成了二十五个O6-烷基、O6-芳基和O6-取代芳基鸟嘌呤类似物，包括九个新化合物，并对它们进行了表征、分子对接分析，并在T98G GBM细胞上测试了其细胞毒性。 结果：通过与MGMT的分子建模，新设计的化合物19、22和24成为最有前景的MGMT配体，并显示出适度的细胞毒性。含有对硝基苄基的鸟嘌呤类似物（19）显著降低了O6-甲基鸟嘌呤DNA甲基转移酶的表达水平。当与用于脑肿瘤一线治疗的TMZ（1）联合使用时，化合物19、22和24分别使T98G细胞的增殖减少了32%、68%和50%。TMZ（1）对这些细胞的增殖显示出微弱的影响，这进一步支持了这种细胞模型对这种烷基化剂具有耐药性的观点。 结论：总的来说，这些结果显著突出了一些值得进一步探索的MGMT抑制剂，以开发克服脑肿瘤中TMZ耐药性的治疗方案。
• Probing the ATP Ribose-Binding Domain of Cyclin-Dependent Kinases 1 and 2 with <i>O</i>⁶-Substituted Guanine Derivatives
  作者：Ashleigh E. Gibson、Christine E. Arris、Johanne Bentley、F. Thomas Boyle、Nicola J. Curtin、Thomas G. Davies、Jane A. Endicott、Bernard T. Golding、Sharon Grant、Roger J. Griffin、Philip Jewsbury、Louise N. Johnson、Veronique Mesguiche、David R. Newell、Martin E. M. Noble、Julie A. Tucker、Hayley J. Whitfield

  DOI：10.1021/jm020056z

  日期：2002.8.1

  O-6-Substituted guanines are adenosine 5'-triphosphate (ATP) competitive inhibitors of CDK1/cyclin B I and CDK2/cyclin A, the O-6 substituent occupying the kinase ribose binding site. Fifty-eight O-6-substituted guanines were prepared to probe the ribose pocket, and the structures of four representative compounds bound to monomeric CDK2 were determined by X-ray crystallography. Optimum binding occurs with a moderately sized aliphatic 06 substituent that packs tightly against the hydrophobic patch presented by the glycine loop, centered on Val18, an interaction promoted by the conformational restraints imposed in a cyclohexylmethyl or cyclohexenylmethyl ring. Structure-based design generated (R)-(2-amino-9H-purin-6-yloxymethyl)pyrrolidin-2-one (56), which reproduces the reported hydrogen bonds formed between ATP and Asp86 and Gln131 but failed to improve inhibitory potency. Thus, the parent compound O-6-cyclohexylmethylguanine (NU2058, 25) is the preferred starting point for exploring other areas of the kinase active site.
• CYCLIN DEPENDENT KINASE INHIBITING PURINE DERIVATIVES
  申请人：Cancer Research Technology Limited

  公开号：EP1017394B1

  公开（公告）日：2005-12-07
• US6303618B1
  申请人：——

  公开号：US6303618B1

  公开（公告）日：2001-10-16
• [EN] CYCLIN DEPENDENT KINASE INHIBITING PURINE DERIVATIVES<br/>[FR] DERIVES DE PURINE INHIBANT LA KINASE DEPENDANT DE LA CYCLINE
  申请人：——

  公开号：WO1999002162A1

  公开（公告）日：1999-01-21

  [EN] A range is disclosed of purine derivatives (I) which can act as inhibitors of cyclin dependent kinases (CDKs) and which thereby c an provide useful therapeutic compounds for use in treatment of tumours or other cell proliferation disorders. The compounds of this invention bind to CDK molecules in a manner that appears to be different to that of known CDK inhibitors such as olomoucine and roscovitine. In formula (I), in preferred embodiments: X is O, S or CHRx where Rx is H or C1-4 alkyl; D is H, halo or NZ1Z2 where Z1 and Z2 are each independently H or C1-4 alkyl or C1-4 hydroxyalkyl; A is selected from H, C1-4 alkyl, C1-4 alkoxy, hydroxy, CH2(CH2)nOH (n=1-4), and NRa1Ra2 where Ra1 and Ra2 are each independently H or C1-4 alkyl; B is selected from H, C1-4 alkyl, C1-4 alkoxy, CF3, an optionally substituted aryl (e.g. phenyl) or an optionally substituted aralkyl (e.g. benzyl), and an hydroxy group that provides a C=O tautomer; and Y is or includes an optionally substituted 4- to 8-membered carbocyclic or heterocyclic ring; or comprises an optionally substituted linear or branched hydrocarbon chain.
  [FR] L'invention porte sur une gamme de dérivés de purine (I) pouvant agir comme inhibiteurs des kinases dépendant de la cycline (CDK) et pouvant, par conséquent, produire des composés thérapeutiques destinés à être utilisés dans le traitement de tumeurs ou autres troubles de la prolifération cellulaire. Ces composés se lient à des molécules de CDK de façon à être différents de ceux produits par des inhibiteurs connus de CDK tels que olomoucine et roscovitine. Dans la formule (I), selon des réalisations préférées, X représente O, S ou CHRx, Rx représentant H ou alkyle C1-4; D représente H, halo ou NZ1Z2, Z1 et Z2 représentant chacun, indépendamment H, ou alkyle C1-4 ou hydroxyalkyle C1-4; A est sélectionné parmi H, alkyle C1-4, alcoxy C1-4, hydroxy, Ch2(CH2)nOH (n=1-4), et NRa1Ra2, Ra1 et Ra2 représentant chacun, indépendamment, H ou alkyle C1-4; B est sélectionné parmi H, alkyle C1-4, alcoxy C1-4, CF3, un aryle éventuellement substitué (tel que phényle) ou un aralkyle éventuellement substitué (tel que benzyle), et un groupe hydroxy qui produit un tautomère C=O; et Y représente ou comprend un noyau carbocyclique ou hétérocyclique à 4 ou 8 éléments; ou une chaîne d'hydrocarbure linéaire ou ramifiée, éventuellement substituée.