(R)-(-)-2-phenyl-5-<(dimethylamino)methyl>isoxazolidin-3-one | 140176-85-8

• 分子结构分类: 有机化合物 - 苯类化合物 - N-苯基羟胺
• 英文名称: (R)-(-)-2-phenyl-5-<(dimethylamino)methyl>isoxazolidin-3-one
• 英文别名: (R)-(-)-2-phenyl-5-[(dimethylamino)methyl]isoxazolidin-3-one；(5R)-5-[(dimethylamino)methyl]-2-phenyl-1,2-oxazolidin-3-one
• CAS: 140176-85-8；140385-01-9
• 化学式: C₁₂H₁₆N₂O₂
• 分子量: 220.271
• InChiKey: GNTFBSFSJNWSRT-LLVKDONJSA-N

物化性质

• 沸点：
  298.2±32.0 °C(Predicted)
• 密度：
  1.142±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.29
• 重原子数：
  16.0
• 可旋转键数：
  3.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  32.78
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  (R)-(-)-2-phenyl-5-<(dimethylamino)methyl>isoxazolidin-3-one 、 碘甲烷 以 乙醚 、 丙酮 为溶剂， 以100%的产率得到(R)-(-)-2-phenyl-5-<(dimethylamino)methyl>isoxazolidin-3-one methiodide
  参考文献：
  名称：

  Nitrile oxides in medicinal chemistry. 4. Chemoenzymic synthesis of chiral heterocyclic derivatives

  摘要：

  The two enantiomers of 3-bromo-5-(hydroxymethyl)-DELTA-2-isoxazoline (1) and 2-phenyl-5-(hydroxymethyl)-isoxazolidin-3-one (9) have been prepared in enantiomeric excess higher than 90% by hydrolysis of the corresponding butyrates under the catalysis of lipase PS, which was the most selective catalyst of the enzymes tested. The pairs of enantiomers of 1 and 9 were transformed into the chiral forms of the potent muscarinic ligands 3 and 5. The results obtained with the homogeneous set of esters 6, 7, 10a-d evidence a strong dependence of reaction rate and enantioselectivity of the lipase PS-catalyzed transformations upon both the size of the acyl moiety and the shape of the group carrying the alcoholic part of the ester. In the series of esters 10a-d, the best results were obtained with butyrate 10b. Quite interestingly, on passing from the butyrate of 1 to that of 9, the value of the enantiomeric ratio remained remarkably high but the enantiopreference switched from R to S. In between lies the butyrate of 2-methyl-5-(hydroxymethyl)isoxazolidin-3-one [(+/-)-6] which was barely recognized by lipase PS and yielded alcohol (R)-(-)-2 in a modest enantiomeric excess.

  DOI：

  10.1021/jo00036a013
• 作为产物：
  描述：

  3-(benzyloxycarbonyl)-3-chloro-N-phenylpropiono-N-hydroxamic acid 在 porcine pancreatic lipase 、 Lipase PS 吡啶 、 sodium tetrahydroborate 、 potassium phosphate buffer 、 碳酸氢钠 、 lithium chloride 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 二氯甲烷 、 丙酮 为溶剂， 反应 5.17h， 生成 (R)-(-)-2-phenyl-5-<(dimethylamino)methyl>isoxazolidin-3-one
  参考文献：
  名称：

  Nitrile oxides in medicinal chemistry. 4. Chemoenzymic synthesis of chiral heterocyclic derivatives

  摘要：

  The two enantiomers of 3-bromo-5-(hydroxymethyl)-DELTA-2-isoxazoline (1) and 2-phenyl-5-(hydroxymethyl)-isoxazolidin-3-one (9) have been prepared in enantiomeric excess higher than 90% by hydrolysis of the corresponding butyrates under the catalysis of lipase PS, which was the most selective catalyst of the enzymes tested. The pairs of enantiomers of 1 and 9 were transformed into the chiral forms of the potent muscarinic ligands 3 and 5. The results obtained with the homogeneous set of esters 6, 7, 10a-d evidence a strong dependence of reaction rate and enantioselectivity of the lipase PS-catalyzed transformations upon both the size of the acyl moiety and the shape of the group carrying the alcoholic part of the ester. In the series of esters 10a-d, the best results were obtained with butyrate 10b. Quite interestingly, on passing from the butyrate of 1 to that of 9, the value of the enantiomeric ratio remained remarkably high but the enantiopreference switched from R to S. In between lies the butyrate of 2-methyl-5-(hydroxymethyl)isoxazolidin-3-one [(+/-)-6] which was barely recognized by lipase PS and yielded alcohol (R)-(-)-2 in a modest enantiomeric excess.

  DOI：

  10.1021/jo00036a013