5-甲基胞苷 | 2140-61-6

• 物质功能分类: 生物化工 - 核苷类药物 - 核苷中间体
• 分子结构分类: 有机化合物 - 核苷、核苷酸和类似物 - 嘧啶核苷
• 中文名称: 5-甲基胞苷
• 英文名称: 5-methylcytidine
• 英文别名: 5-Methyl-cytidin；4-amino-1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidin-2-one
• CAS: 2140-61-6
• 化学式: C₁₀H₁₅N₃O₅
• 分子量: 257.246
• InChiKey: ZAYHVCMSTBRABG-JXOAFFINSA-N

物化性质

• 熔点：
  212-215 °C (dec.) (lit.)
• 沸点：
  537.5±60.0 °C(Predicted)
• 密度：
  1.79
• 溶解度：
  DMSO（少量）、甲醇（少量）、水（少量）
• 最大波长(λmax)：
  287 (pH 0)；277 (pH 7)
• 物理描述：
  Solid
• 碰撞截面：
  157.4 Ų [M+H]+ [CCS Type: DT, Method: single field calibrated with Agilent tune mix (Agilent)]

计算性质

• 辛醇/水分配系数(LogP)：
  -2
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  129
• 氢给体数：
  4
• 氢受体数：
  5

安全信息

• 危险品标志：
  Xi
• 安全说明：
  S26,S36
• 危险类别码：
  R36/37/38
• WGK Germany：
  3
• 海关编码：
  2934999090
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H315,H319,H335

制备方法与用途

概述

5-甲基胞苷是大肠杆菌中RNA的一种成分，存在于植物、动物和细菌起源的RNA中，并作为转移RNA (tRNA) 中C衍生物之一而存在。

用途

5-甲基胞苷已被用作反相高效液相色谱 (RP-HPLC) 校准曲线的标准品，也可用于 DNA 甲基化过程（表观遗传学）的研究。

生物化学性质

5-甲基胞苷是一种烷基化嘧啶，在增强核酸 A- 和 B- 螺旋的堆积方面发挥着重要作用，导致解链温度升高并提高热稳定性，从而实现结构稳定。

生物活性

5-甲基胞苷是由 5-甲基胞嘧啶衍生而来的修饰核苷，在动物、植物和细菌核糖核酸中均有发现。

靶点

Human Endogenous Metabolite

反应信息

• 作为反应物：
  描述：

  5-甲基胞苷 在 sodium hydroxide 作用下， 生成 5-甲基尿甙
  参考文献：
  名称：

  Lönnberg; Suokas; Käppi, Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry, 1986, vol. 40, # 10, p. 798 - 805

  摘要：

  DOI：
• 作为产物：
  描述：

  5-甲基胞嘧啶 在 sodium methylate 、 tin(ll) chloride 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 24.0h， 生成 5-甲基胞苷
  参考文献：
  名称：

  Recognition of RNA by triplex formation: Divergent effects of pyrimidine C-5 methylation

  摘要：

  In DNA triple helices, methylation at C-5 of thymine or cytosine is reported to have similar stabilizing effects for both bases. Here we show, however, that methylation of the same positions in RNA triplexes has distinctly different effects than in DNA. We have previously described the use of circular tripler-forming RNA oligonucleotides to recognize RNA sequences. Here it is shown that addition of C-5 methyl groups to uracils in these compounds very significantly increases not only affinity but also sequence selectivity in binding a purine-rich RNA target, as measured by thermal denaturation with various target RNAs. Surprisingly, however, addition of C-5 methyl groups to cytosines actually decreases affinity in binding RNA, while the same substitution in DNA is thermally stabilizing. possible sources of this divergent behavior are discussed. A synthesis of 5-methylcytidine ribonucleoside 2'-O-silyl-3'-O-phosphoramidite is also described. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0968-0896(97)00059-x

文献信息

• [EN] BIOACTIVE CONJUGATES FOR OLIGONUCLEOTIDE DELIVERY<br/>[FR] CONJUGUÉS BIOACTIFS POUR L'ADMINISTRATION D'OLIGONUCLÉOTIDES
  申请人：UNIV MASSACHUSETTS

  公开号：WO2017030973A1

  公开（公告）日：2017-02-23

  Provided herein are self-delivering oligonucleotides that are characterized by efficient RISC entry, minimum immune response and off-target effects, efficient cellular uptake without formulation, and efficient and specific tissue distribution.

  本文提供的自递送寡核苷酸具有高效的RISC进入、最小的免疫反应和非靶效应、无需配方的高效细胞摄取，以及高效和特异的组织分布。
• POLY(PHOSPHOESTERS) FOR DELIVERY OF NUCLEIC ACIDS
  申请人：TRANSLATE BIO, INC.

  公开号：US20200277446A1

  公开（公告）日：2020-09-03

  Disclosed are polymers comprising the moiety A, which is a moiety of formula I: and pharmaceutically acceptable salts thereof, wherein R, R 1 , R 2 , L, n1 and n2 are as defined herein. These polymers are useful for delivering nucleic acids to subject. These polymers and pharmaceutically acceptable compositions comprising such polymers and nucleic acids can be useful for treating various diseases, disorders and conditions.

  揭示了包含A基团的聚合物，该基团是化学式I的基团：及其药用可接受的盐，其中R、R1、R2、L、n1和n2如本文所定义。这些聚合物对于将核酸传递给受试者是有用的。这些聚合物和包含这些聚合物和核酸的药用可接受组合物可用于治疗各种疾病、疾病和症状。
• [EN] COMPOUNDS COMPRISING CLEAVABLE LINKER AND USES THEREOF<br/>[FR] COMPOSÉS COMPRENANT UN LIEUR CLIVABLE ET LEURS UTILISATIONS
  申请人：INTOCELL INC

  公开号：WO2019008441A1

  公开（公告）日：2019-01-10

  Provided are a compound including a cleavable linker, a use thereof, and an intermediate compound for preparing the same, and more particularly, the compound including a cleavable linker of the present invention may include an active agent (for example, a drug, a toxin, a ligand, a probe for detection, etc.) having a specific function or activity, a SO2 functional group which is capable of selectively releasing the active agent, and a functional group which triggers a chemical reaction, a physicochemical reaction and/or a biological reaction by external stimulation, and may further include a ligand (for example, oligopeptide, polypeptide, antibody, etc.) having binding specificity for a desired target receptor.

  提供了一种包括可切割连接物的化合物，其用途，以及用于制备该化合物的中间体化合物，更具体地，本发明的包括可切割连接物的化合物可能包括具有特定功能或活性的活性剂（例如，药物，毒素，配体，用于检测的探针等），能够选择性释放活性剂的SO2官能团，以及通过外部刺激触发化学反应，物理化学反应和/或生物反应的官能团，并且还可以包括具有与所需靶受体结合特异性的配体（例如，寡肽，多肽，抗体等）。
• [EN] COMPOUNDS, COMPOSITIONS AND METHODS FOR SYNTHESIS<br/>[FR] COMPOSÉS, COMPOSITIONS ET PROCÉDÉS DE SYNTHÈSE
  申请人：WAVE LIFE SCIENCES LTD

  公开号：WO2018237194A1

  公开（公告）日：2018-12-27

  The present disclosure, among other things, provides technologies for synthesis, including reagents and methods for stereoselective synthesis. In some embodiments, the present disclosure provides compounds useful as chiral auxiliaries. In some embodiments, the present disclosure provides reagents and methods for oligonucleotide synthesis. In some embodiments, the present disclosure provides reagents and methods for chirally controlled preparation of oligonucleotides. In some embodiments, technologies of the present disclosure are particularly useful for constructing challenging internucleotidic linkages, providing high yields and stereoselectivity.

  本公开内容提供了合成技术，包括用于立体选择性合成的试剂和方法。在某些实施例中，本公开内容提供了作为手性辅助剂有用的化合物。在某些实施例中，本公开内容提供了用于寡核苷酸合成的试剂和方法。在某些实施例中，本公开内容提供了用于手性控制寡核苷酸制备的试剂和方法。在某些实施例中，本公开内容的技术特别适用于构建具有挑战性的核苷酸间连接，提供高产率和立体选择性。
• Oligonucleotides comprising a non-phosphate backbone linkage
  申请人：Manoharan Muthiah

  公开号：US20060287260A1

  公开（公告）日：2006-12-21

  One aspect of the present invention relates to a ribonucleoside substituted with a phosphonamidite group at the 3′-position. In certain embodiments, the phosphonamidite is an alkyl phosphonamidite. Another aspect of the present invention relates to a double-stranded oligonucleotide comprising at least one non-phosphate linkage. Representative non-phosphate linkages include phosphonate, hydroxylamine, hydroxylhydrazinyl, amide, and carbamate linkages. In certain embodiments, the non-phosphate linkage is a phosphonate linkage. In certain embodiments, a non-phosphate linkage occurs in only one strand. In certain embodiments, a non-phosphate linkage occurs in both strands. In certain embodiments, a ligand is bound to one of the oligonucleotide strands comprising the double-stranded oligonucleotide. In certain embodiments, a ligand is bound to both of the oligonucleotide strands comprising the double-stranded oligonucleotide. In certain embodiments, the oligonucleotide strands comprise at least one modified sugar moiety. Another aspect of the present invention relates to a single-stranded oligonucleotide comprising at least one non-phosphate linkage. Representative non-phosphate linkages include phosphonate, hydroxylamine, hydroxylhydrazinyl, amide, and carbamate linkages. In certain embodiments, the non-phosphate linkage is a phosphonate linkage. In certain embodiments, a ligand is bound to the oligonucleotide strand. In certain embodiments, the oligonucleotide comprises at least one modified sugar moiety.

  本发明的一个方面涉及在3'-位置用磷酰胺基团取代的核糖核苷。在某些实施例中，磷酰胺基团是烷基磷酰胺基团。本发明的另一个方面涉及包含至少一个非磷酸酯连接的双链寡核苷酸。代表性的非磷酸酯连接包括磷酸酯、羟胺、羟基肼基、酰胺和碳酸酯连接。在某些实施例中，非磷酸酯连接是磷酸酯连接。在某些实施例中，非磷酸酯连接仅出现在一条链中。在某些实施例中，非磷酸酯连接出现在两条链中。在某些实施例中，配体结合到包含双链寡核苷酸的寡核苷酸链中的一条链上。在某些实施例中，配体结合到包含双链寡核苷酸的寡核苷酸链中的两条链上。在某些实施例中，寡核苷酸链包含至少一个修饰的糖基团。本发明的另一个方面涉及包含至少一个非磷酸酯连接的单链寡核苷酸。代表性的非磷酸酯连接包括磷酸酯、羟胺、羟基肼基、酰胺和碳酸酯连接。在某些实施例中，非磷酸酯连接是磷酸酯连接。在某些实施例中，配体结合到寡核苷酸链上。在某些实施例中，寡核苷酸包含至少一个修饰的糖基团。