4,5-二氯-1H-吡咯并[2,3-d]嘧啶-2-胺 | 873792-86-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯并嘧啶类
• 中文名称: 4,5-二氯-1H-吡咯并[2,3-d]嘧啶-2-胺
• 英文名称: 2-amino-4,5-dichloro-7H-pyrrolo[2,3-d]pyrimidine
• 英文别名: 4,5-dichloro-7H-pyrrolo[2,3-d]pyrimidin-2-amine
• CAS: 873792-86-0
• 化学式: C₆H₄Cl₂N₄
• 分子量: 203.031
• InChiKey: PCVVGPYKRWHBKE-UHFFFAOYSA-N

物化性质

• 熔点：
  >290 °C (decomp)
• 密度：
  1.773±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  12
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  67.6
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4,5-二氯-1H-吡咯并[2,3-d]嘧啶-2-胺 在 氢氧化钾 、 三(3,6-二氧杂庚基)胺 、 sodium methylate 作用下， 以 乙腈 为溶剂， 反应 3.5h， 生成 5-chloro-7-(2-deoxy-β-L-erythro-pentofuranosyl)-4-methoxy-7H-pyrrolo[2,3-d]pyrimidin-2-amine
  参考文献：
  名称：

  Pyrrolo[2,3-d]pyrimidine β-L-Nucleosides Containing 7-Deazaadenine, 2-Amino-7-deazaadenine, 7-Deazaguanine, 7-Deazaisoguanine, and 7-Deazaxanthine

  摘要：

  描述了7-去氮嘌呤β-L-核苷的合成和性质。以2-氨基-6-氯-7-去氮嘌呤的阴离子9a、9b或6-氯-7-去氮嘌呤的阴离子13a、13d在3,5-二-O-(对甲基苯甲酰)-2-脱氧-α-L-erythro-戊呋糖氯化物(8)的条件下进行立体选择性糖基化，得到了β-L-2'-脱氧核苷1-4。β-L-核糖核苷5-7的合成使用了Silyl-Hilbert-Johnson反应(TMSOTf/BSA/MeCN)，在Vorbrüggen条件下进行了对7-卤代的6-氯-2-哌瓦酰胺基-7-去氮嘌呤17b-17d与1-O-乙酰基-2,3,5-三-O-苯甲酰-L-核糖呋糖(16)的糖基化。进行了单晶X射线分析并测量了CD光谱以确定构型。报道了对选定DNA和RNA病毒的抗病毒活性。

  DOI：

  10.1135/cccc20060956
• 作为产物：
  描述：

  2-氨基-4-氯吡咯并[2,3-d]嘧啶 在 吡啶 、 N-氯代丁二酰亚胺 、 氨 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 20.58h， 生成 4,5-二氯-1H-吡咯并[2,3-d]嘧啶-2-胺
  参考文献：
  名称：

  7-Functionalized 7-Deazapurine Ribonucleosides Related to 2-Aminoadenosine, Guanosine, and Xanthosine:  Glycosylation of Pyrrolo[2,3-d]pyrimidines with 1-O-Acetyl-2,3,5-tri-O-benzoyl-d-ribofuranose

  摘要：

  The Silyl-Hilbert-Johnson reaction as well as the nucleobase-anion glycosylation of a series of 7-deazapurines has been investigated, and the 7-functionalized 7-deazapurine ribonucleosides were prepared. Glycosylation of the 7-halogenated 6-chloro-2-pivaloylamino-7-deazapurines 9b-d with 1-O-acetyl2,3,5-tri-O-benzOyl-D-ribofuranose (5) gave the beta-D-nucleosides 11b-d (73-75% yield), which were transformed to a number of novel 7-halogenated 7-deazapurine ribonucleosides (2b-d, 3b-d, and 4b-d) related to guanosine, 2-aminoadenosine, and xanthosine. 7-Alkynyl derivatives (2e-i, 3e-h, or 4g) have been prepared from the corresponding 7-iodonucleosides 2d, 3d, or 4d employing the palladium-catalyzed Sonogashira cross-coupling reaction. The 7-halogenated 2-amino-7-deazapurine ribonucleosides with a reactive 6-chloro substituent (18b-d) were synthesized in an alternative way using nucleobase-anion glycosylation performed on the 7-halogenated 2-arnino-6-chloro-7-deazapurines 13b-d with 5-0-[(1,1dimethylethyl)dimethylsilyl]-2,3-O-(1-methylethylidene)-alpha-D-ribofuranosyl chloride (17). Compounds 18b-d have been converted to the nucleosides 19b-d carrying reactive substituents in the pyrimidine moiety. Conformational analysis of selected nucleosides on the basis of proton coupling constants and using the program PSEUROT showed that these ribonucleosides exist in a preferred S conformation in solution.

  DOI：

  10.1021/jo0516640

文献信息

• 7-DEAZAPURIN-2,6-DIAMINE AND 7-DEAZAGUANINE: SYNTHESIS AND PROPERTY OF 7-SUBSTITUTED NUCLEOSIDES AND OLIGONUCLEOTIDES
  作者：Frank Seela、Xiaohua Peng、Xin Ming

  DOI：10.1081/ncn-200060319

  日期：2005.4.1

  The synthesis of 7-substituted 7-deazaguanine and 7-deazaadenine ribonucleosides 1-2, the incorporation of 3a-d into oligonucleotides, and the stability of the corresponding duplexes and base discrimination are described. The pK(a), values of 3 - 4 are determined.