(+/-)-2-phenyl-5-(hydroxymethyl)isoxazolidin-3-one butyrate | 140176-89-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑烷类
• 英文名称: (+/-)-2-phenyl-5-(hydroxymethyl)isoxazolidin-3-one butyrate
• 英文别名: (3-oxo-2-phenyl-1,2-oxazolidin-5-yl)methyl butanoate
• CAS: 140176-89-2
• 化学式: C₁₄H₁₇NO₄
• 分子量: 263.293
• InChiKey: CUSMGPWJZDJNOS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.07
• 重原子数：
  19.0
• 可旋转键数：
  5.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  55.84
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  (+/-)-2-phenyl-5-(hydroxymethyl)isoxazolidin-3-one butyrate 在 porcine pancreatic lipase 、 Lipase PS potassium phosphate buffer 作用下， 以 丙酮 为溶剂， 反应 5.0h， 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
• 作为产物：
  描述：

  3-(benzyloxycarbonyl)-3-chloro-N-phenylpropiono-N-hydroxamic acid 在 吡啶 、 sodium tetrahydroborate 、 碳酸氢钠 、 lithium chloride 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 二氯甲烷 为溶剂， 反应 0.17h， 生成 (+/-)-2-phenyl-5-(hydroxymethyl)isoxazolidin-3-one butyrate
  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

文献信息

• Nitrile oxides in medicinal chemistry. 5. Lipase PS-catalyzed resolution of a set of heterocyclic derivatives.
  作者：Giacomo Carrea、Marco de Amici、Carlo de Micheli、Paola Liverani、Marta Carnielli、Sergio Riva

  DOI：10.1016/s0957-4166(00)80155-x

  日期：1993.5

  Lipase from Pseudomonas cepacia (lipase PS) catalyzed the hydrolysis of a series of butyrates of racemic primary alcohols carrying a Δ2-isoxazoline or an isoxazolidin-3-one nucleus. Within this set of compounds, the enantiopreference of the catalyst can be accounted for by a rule recently proposed for lipase PS-catalyzed resolution of secondary alcohols. Nevertheless much work needs to be done in order

  从脂肪酶洋葱假单胞菌（脂肪酶PS）催化的一系列承载Δ外消旋伯醇丁酸酯的水解2 -isoxazoline或异恶唑烷-3-酮核。在这组化合物中，催化剂的对映体优先性可通过最近提出的关于脂肪酶PS催化仲醇拆分的规则来解释。然而，为了预测对映选择性的程度和相对反应速率，需要做很多工作。