| 1225609-84-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• CAS: 1225609-84-6
• 化学式: C₂₁H₂₃BrO₅
• 分子量: 435.315
• InChiKey: AJPIUQCGTHJPLL-XVVDYKMHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.03
• 重原子数：
  27.0
• 可旋转键数：
  5.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  64.99
• 氢给体数：
  1.0
• 氢受体数：
  5.0

反应信息

• 作为产物：
  描述：

  (2S,5S,6S)-methyl 6-(3-(benzyloxy)-5-bromophenyl)-5-methyl-5,6-dihydro-2H-pyran-2-carboxylate 在 硼烷四氢呋喃络合物 、 双氧水 、 sodium hydroxide 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 1.0h， 以47%的产率得到(2S,3S,5S,6S)-methyl 6-(3-(benzyloxy)-5-bromophenyl)-3-hydroxy-5-methyltetrahydro-2H-pyran-2-carboxylate
  参考文献：
  名称：

  Synthesis of Reblastatin, Autolytimycin, and Non-Benzoquinone Analogues: Potent Inhibitors of Heat Shock Protein 90

  摘要：

  A full account of an asymmetric synthesis of reblastatin (1) and the first total synthesis of autolytimycin (2) and related structural compounds is described. The syntheses expand the utility of a highly regio- and diastereoselective hydrometalation aldehyde addition sequence to assemble the fully functionalized ansa chain of the natural products. Also documented is an intramolecular copper-mediated amidation reaction to close the 19-membered macrolactams. The amidation reaction was also employed for the generation of structural derivatives (6-9) of phenolic ansamycins. Ansamycin natural products and selected structural analogues were evaluated in a competitive binding assay to breast cancer cell lysate and a cytotoxicity assay. Both reblastatin (1) and autolytimycin (2) were shown to bind the heat shock protein 90 with enhanced binding activity (similar to 25 nM) than 17-allylamino-17-demethoxygeldanamycin (17-AAG, 4), a geldanamycin (3) derivative currently under evaluation for treatment of cancer (similar to 100 nM).

  DOI：

  10.1021/jo1000109