5-methylamino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-1H-pyrazole | 156092-41-0

• 分子结构分类: 有机化合物 - 核苷、核苷酸和类似物 - 吡唑并[3，4-d]嘧啶糖苷
• 英文名称: 5-methylamino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-1H-pyrazole
• CAS: 156092-41-0
• 化学式: C₃₃H₃₅N₅O₅
• 分子量: 581.671
• InChiKey: OUNQPDMEQHIAIL-GZJKXRRHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.57
• 重原子数：
  43.0
• 可旋转键数：
  13.0
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  105.69
• 氢给体数：
  1.0
• 氢受体数：
  10.0

反应信息

• 作为反应物：
  描述：

  5-methylamino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-1H-pyrazole 在 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 、 paraffin 为溶剂， 反应 0.5h， 以11.0 g的产率得到N-[6-((2R,3R,4R,5R)-3,4-Bis-benzyloxy-5-benzyloxymethyl-tetrahydro-furan-2-yl)-1-methyl-1,6-dihydro-pyrazolo[3,4-c]pyrazol-3-yl]-acetamide
  参考文献：
  名称：

  Synthesis and Biological Activity of the Novel Adenosine Analogs; 3-Amino-6-(β-D-ribofuranosyl)pyrazolo[3,4-c]pyrazole and 3-Amino-1-methyl-6-(β-D-ribofuranosyl)pyrazolo[3,4-c]pyrazole

  摘要：

  Chemical modification of the 4-nitrile group in 5-amino-1-(2,3,5-tri-O-benzyl-beta-D-ribofuranosyl)pyrazole-4-carbonitrile (1) afforded 5-amino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl-beta-D-ribofuranosyl)pyrazole (3). The methylation of 3, via a three step procedure, gave 5-methylamino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl-beta-D-ribofuranosyl)pyrazole (3a). The mononuclear heterocyclic rearrangement (m.h.r) of 3 and 3a, provided a convenient route to the novel azapentalene adenosine analogs 3-amino-6-(beta-D-ribofuranosyl)pyrazolo[3,4-c]pyrazole (6) and 3-amino-1-methyl-6-(beta-D-ribofuranosyl)pyrazolo [3,4-c]pyrazole (6a), respectively. Compound 6 exhibited no cytotoxicity when screened in vitro against either mouse L1210 leukemic cells or human foreskin fibroblasts. Nor was it active against human cytomegalovirus. Compound 6a was designed and prepared to investigate the possibility that the lack of biological activity of 6 might be due to annular tautomerization limiting the ability of 6 to serve as a substrate for the activating enzyme adenosine kinase. This hypothesis was neither supported nor disproved by the results, as compound 6a was also inactive in both the antiproliferative and antiviral test systems.

  DOI：

  10.1080/15257779408013250
• 作为产物：
  描述：

  5-amino-1-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)pyrazole-4-carboxamidoxime 在 sodium ethanolate 作用下， 以 乙醇 、 乙酸乙酯 为溶剂， 反应 8.0h， 生成 5-methylamino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-1H-pyrazole
  参考文献：
  名称：

  Synthesis and Biological Activity of the Novel Adenosine Analogs; 3-Amino-6-(β-D-ribofuranosyl)pyrazolo[3,4-c]pyrazole and 3-Amino-1-methyl-6-(β-D-ribofuranosyl)pyrazolo[3,4-c]pyrazole

  摘要：

  Chemical modification of the 4-nitrile group in 5-amino-1-(2,3,5-tri-O-benzyl-beta-D-ribofuranosyl)pyrazole-4-carbonitrile (1) afforded 5-amino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl-beta-D-ribofuranosyl)pyrazole (3). The methylation of 3, via a three step procedure, gave 5-methylamino-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1-(2,3,5-tri-O-benzyl-beta-D-ribofuranosyl)pyrazole (3a). The mononuclear heterocyclic rearrangement (m.h.r) of 3 and 3a, provided a convenient route to the novel azapentalene adenosine analogs 3-amino-6-(beta-D-ribofuranosyl)pyrazolo[3,4-c]pyrazole (6) and 3-amino-1-methyl-6-(beta-D-ribofuranosyl)pyrazolo [3,4-c]pyrazole (6a), respectively. Compound 6 exhibited no cytotoxicity when screened in vitro against either mouse L1210 leukemic cells or human foreskin fibroblasts. Nor was it active against human cytomegalovirus. Compound 6a was designed and prepared to investigate the possibility that the lack of biological activity of 6 might be due to annular tautomerization limiting the ability of 6 to serve as a substrate for the activating enzyme adenosine kinase. This hypothesis was neither supported nor disproved by the results, as compound 6a was also inactive in both the antiproliferative and antiviral test systems.

  DOI：

  10.1080/15257779408013250