MRS2964 | 1242238-58-9

• 分子结构分类: 有机化合物 - 核苷、核苷酸和类似物 - 嘧啶核苷酸
• 英文名称: MRS2964
• 英文别名: N4-OBn-CDP；N4-BnO-CDP；N4-benzyloxy-CDP；N4-Benzyloxycytidine 5''-Diphosphate triethylammonium Salt；[(2R,3S,4R,5R)-3,4-dihydroxy-5-[2-oxo-4-(phenylmethoxyamino)pyrimidin-1-yl]oxolan-2-yl]methyl phosphono hydrogen phosphate
• CAS: 1242238-58-9
• 化学式: C₁₆H₂₁N₃O₁₂P₂
• 分子量: 509.303
• InChiKey: YNDKQBMZPIWHEC-NMFUWQPSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.6
• 重原子数：
  33
• 可旋转键数：
  10
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  217
• 氢给体数：
  6
• 氢受体数：
  12

反应信息

• 作为反应物：
  描述：

  MRS2964 在 碳酸氢铵 作用下， 生成 N4-benzyloxycytidine 5-diphosphate ammonium salt
  参考文献：
  名称：

  Pyrimidine Ribonucleotides with Enhanced Selectivity as P2Y₆ Receptor Agonists: Novel 4-Alkyloxyimino, (S)-Methanocarba, and 5′-Triphosphate γ-Ester Modifications

  摘要：

  The P2Y(6) receptor is a cytoprotective G-protein-coupled receptor (GPCR) activated by UDP (EC50 = 0.30 mu M). We compared and combined modifications to enhance P2Y(6) receptor agonist selectivity, including ribose ring constraint, 5-iodo and 4-alkyloxyimino modifications, and phosphate modifications such as alpha,beta-methylene and extension of the terminal phosphate group into gamma-esters of UTP analogues. The conformationally constrained (S)-methanocarba-UDP is a full agonist (EC50 = 0.042 mu M). 4-Methoxyimino modification of pyrimidine enhanced P2Y(6), preserved P2Y(2) and P2Y(4), and abolished P2Y(14) receptor potency, in the appropriate nucleotide. N-4-Benzyloxy-CDP (15, MRS2964) and N-4-methoxy-Cp3U Cp3U (12, MRS2957) were potent, selective P2Y(6) receptor agonists (EC50 of 0.026 and 0.012 mu M, respectively). A hydrophobic binding region near the nucleobase was explored with receptor modeling and docking. UTP-gamma-aryl and cycloalkyl phosphoesters displayed only intermediate P2Y(6) receptor potency but had enhanced stability in acid and cell membranes. UTP-glucose was inactive, but its (S)-methanocarba analogue and N-4-methoxycytidine 5'-triphospho-gamma-[1]glucose were active (EC50 of 2.47 and 0.18 mu M, respectively). Thus, the potency, selectivity, and stability of pyrimidine nucleotides as P2Y(6) receptor agonists may be enhanced by modest structural changes.

  DOI：

  10.1021/jm100287t
• 作为产物：
  描述：

  胞苷 在 吡啶 、 磷酸三甲酯 、 磷酸 、 1,8-双二甲氨基萘 、 三氯氧磷 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 生成 MRS2964
  参考文献：
  名称：

  4-Alkyloxyimino-cytosine nucleotides: tethering approaches to molecular probes for the P2Y6 receptor

  摘要：

  4-烷氧亚氨基嘧啶核苷酸衍生物作为某些G蛋白偶联P2Y受体（P2YRs）的激动剂显示出高度效力。为了对P2Y6R激动剂进行荧光标记，我们在两个位置（胞苷衍生物的N4位和γ-磷酸基团）上探查了包括炔烃在内的各种功能团，用于点击化学反应。在CDP的嘧啶核碱4位上进行扩展亚氨基取代，相比于CTP衍生物中的γ-磷酸酯形成，通常更好地保持了P2Y6R的效力。荧光染料Alexa Fluor 488的共轭物16激活了在1321N1人星形胶质瘤细胞中表达的人P2Y6R，其EC50为9 nM，并且对这种受体的选择性远高于其他由尿嘧啶核苷酸激活的P2Y受体。流式细胞术检测到16对表达P2Y6R的细胞有特异性标记，而对野生型1321N1细胞无标记。此外，共聚焦显微镜显示16被内化（半衰期18分钟）并有表面结合的荧光。已知的P2Y6R配体抑制标记。16与P2Y6R的同源模型的理论对接预测了荧光团与TM3的外部部分之间的静电相互作用。因此，我们确定了N4-苄氧基团作为合成功能化类似物的结构容许位点，从而得到用于研究P2Y6R的高亲和力分子探针。

  DOI：

  10.1039/c3md00132f

文献信息

• 4-Alkyloxyimino-cytosine nucleotides: tethering approaches to molecular probes for the P2Y6 receptor
  作者：P. Suresh Jayasekara、Matthew O. Barrett、Christopher B. Ball、Kyle A. Brown、Eszter Kozma、Stefano Costanzi、Lucia Squarcialupi、Ramachandran Balasubramanian、Hiroshi Maruoka、Kenneth A. Jacobson

  DOI：10.1039/c3md00132f

  日期：——

  4-Alkyloxyimino derivatives of pyrimidine nucleotides display high potency as agonists of certain G protein-coupled P2Y receptors (P2YRs). In an effort to functionalize a P2Y6R agonist for fluorescent labeling, we probed two positions (N4 and γ-phosphate of cytidine derivatives) with various functional groups, including alkynes for click chemistry. Functionalization of extended imino substituents at the 4 position of the pyrimidine nucleobase of CDP preserved P2Y6R potency generally better than γ-phosphoester formation in CTP derivatives. Fluorescent Alexa Fluor 488 conjugate 16 activated the human P2Y6R expressed in 1321N1 human astrocytoma cells with an EC50 of 9 nM, and exhibited high selectivity for this receptor over other uridine nucleotide-activated P2Y receptors. Flow cytometry detected specific labeling with 16 to P2Y6R-expressing but not to wild-type 1321N1 cells. Additionally, confocal microscopy indicated both internalized 16 (t1/2 of 18 min) and surface-bound fluorescence. Known P2Y6R ligands inhibited labeling. Theoretical docking of 16 to a homology model of the P2Y6R predicted electrostatic interactions between the fluorophore and extracellular portion of TM3. Thus, we have identified the N4-benzyloxy group as a structurally permissive site for synthesis of functionalized congeners leading to high affinity molecular probes for studying the P2Y6R.

  4-烷氧亚氨基嘧啶核苷酸衍生物作为某些G蛋白偶联P2Y受体（P2YRs）的激动剂显示出高度效力。为了对P2Y6R激动剂进行荧光标记，我们在两个位置（胞苷衍生物的N4位和γ-磷酸基团）上探查了包括炔烃在内的各种功能团，用于点击化学反应。在CDP的嘧啶核碱4位上进行扩展亚氨基取代，相比于CTP衍生物中的γ-磷酸酯形成，通常更好地保持了P2Y6R的效力。荧光染料Alexa Fluor 488的共轭物16激活了在1321N1人星形胶质瘤细胞中表达的人P2Y6R，其EC50为9 nM，并且对这种受体的选择性远高于其他由尿嘧啶核苷酸激活的P2Y受体。流式细胞术检测到16对表达P2Y6R的细胞有特异性标记，而对野生型1321N1细胞无标记。此外，共聚焦显微镜显示16被内化（半衰期18分钟）并有表面结合的荧光。已知的P2Y6R配体抑制标记。16与P2Y6R的同源模型的理论对接预测了荧光团与TM3的外部部分之间的静电相互作用。因此，我们确定了N4-苄氧基团作为合成功能化类似物的结构容许位点，从而得到用于研究P2Y6R的高亲和力分子探针。
• Pyrimidine Ribonucleotides with Enhanced Selectivity as P2Y₆ Receptor Agonists: Novel 4-Alkyloxyimino, (S)-Methanocarba, and 5′-Triphosphate γ-Ester Modifications
  作者：Hiroshi Maruoka、Matthew O. Barrett、Hyojin Ko、Dilip K. Tosh、Artem Melman、Lauren E. Burianek、Ramachandran Balasubramanian、Barkin Berk、Stefano Costanzi、T. Kendall Harden、Kenneth A. Jacobson

  DOI：10.1021/jm100287t

  日期：2010.6.10

  The P2Y(6) receptor is a cytoprotective G-protein-coupled receptor (GPCR) activated by UDP (EC50 = 0.30 mu M). We compared and combined modifications to enhance P2Y(6) receptor agonist selectivity, including ribose ring constraint, 5-iodo and 4-alkyloxyimino modifications, and phosphate modifications such as alpha,beta-methylene and extension of the terminal phosphate group into gamma-esters of UTP analogues. The conformationally constrained (S)-methanocarba-UDP is a full agonist (EC50 = 0.042 mu M). 4-Methoxyimino modification of pyrimidine enhanced P2Y(6), preserved P2Y(2) and P2Y(4), and abolished P2Y(14) receptor potency, in the appropriate nucleotide. N-4-Benzyloxy-CDP (15, MRS2964) and N-4-methoxy-Cp3U Cp3U (12, MRS2957) were potent, selective P2Y(6) receptor agonists (EC50 of 0.026 and 0.012 mu M, respectively). A hydrophobic binding region near the nucleobase was explored with receptor modeling and docking. UTP-gamma-aryl and cycloalkyl phosphoesters displayed only intermediate P2Y(6) receptor potency but had enhanced stability in acid and cell membranes. UTP-glucose was inactive, but its (S)-methanocarba analogue and N-4-methoxycytidine 5'-triphospho-gamma-[1]glucose were active (EC50 of 2.47 and 0.18 mu M, respectively). Thus, the potency, selectivity, and stability of pyrimidine nucleotides as P2Y(6) receptor agonists may be enhanced by modest structural changes.