5(R,S)-C-ethynyl-2,3-O-isopropylidene-1-O-methyl-β-D-ribofuranose | 327614-62-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 5(R,S)-C-ethynyl-2,3-O-isopropylidene-1-O-methyl-β-D-ribofuranose
• CAS: 327614-62-0
• 化学式: C₁₁H₁₆O₅
• 分子量: 228.245
• InChiKey: FJVWAWXRHZZCLD-BHRXDNSCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.13
• 重原子数：
  16.0
• 可旋转键数：
  2.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  57.15
• 氢给体数：
  1.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  5(R,S)-C-ethynyl-2,3-O-isopropylidene-1-O-methyl-β-D-ribofuranose 在 nickel boride 氢气 、 乙二胺 作用下， 以 乙醇 为溶剂， 20.0 ℃ 、68.95 kPa 条件下， 反应 240.0h， 以63%的产率得到2,3-O-isopropylidene-1-O-methyl-5(R,S)-C-vinyl-β-D-ribofuranose
  参考文献：
  名称：

  Synthesis and cytotoxicity of 4′-C- and 5′-C-substituted toyocamycins

  摘要：

  Toyocamycin and some analogues have shown potent antitumor activities; however, none of them could be used clinically primarily owing to their cytotoxicity to normal human cells. In order to overcome the weakness of these nucleoside analogues, substitution of a variety of modified sugars for the ribofuranose was explored in our laboratories with expectation that certain sugar-modified toyocamycin analogues may be selectively cytotoxic to cancer cells. In this article, we report synthesis and cytotoxicity of 4'-C- and T-C-substituted toyocamycins, which were prepared via the condensations of 4-C- and 5-C-substituted ribofuranose derivatives 11, 12, 13, 20, 21, and 26 with the silylated form of 4-amino-6-bromo-5-cyanopyrrolo[2,3-d]py (27) and subsequent debromination and debenzoylation. When compared to the parent toyocamycin, all these analogues showed much lower cytotoxicity to human prostate cancer cells (HTB-81), mouse melanoma cancer cells (B16) as well as normal human fibroblasts. Compound le showed a significant cytotoxicity to the prostate cancer cells and a moderate selectivity. The results suggested that sugar modifications, especially those that may affect phosphorylation of nucleosides, could alter cytotoxicity profile significantly. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(00)00221-2
• 作为产物：
  描述：

  1-((3aR,4R,6R,6aR)-6-Methoxy-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl)-3-trimethylsilanyl-prop-2-yn-1-ol 在 四丁基氟化铵 作用下， 以 二甲基亚砜 为溶剂， 反应 0.33h， 生成 5(R,S)-C-ethynyl-2,3-O-isopropylidene-1-O-methyl-β-D-ribofuranose
  参考文献：
  名称：

  Total Synthesis of Uracil Polyoxin C

  摘要：

  DOI：

  10.1055/s-1998-4499

文献信息

• Synthesis of methyl 5-O-acetyl-7-deoxy-2,3-O-isopropylidene-heptofuranosid-6-uloses
  作者：Allan R. Moorman、Ronald T. Borchardt

  DOI：10.1016/0008-6215(83)84064-6

  日期：1983.8