4-acetylphenyl ethyl methylphosphonate | 918660-68-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-acetylphenyl ethyl methylphosphonate
• 英文别名: ethyl 4-acetylphenyl methylphosphonate；4-Acetylphenyl ethyl methylphosphonate；1-[4-[ethoxy(methyl)phosphoryl]oxyphenyl]ethanone
• CAS: 918660-68-1
• 化学式: C₁₁H₁₅O₄P
• 分子量: 242.211
• InChiKey: BJYIEMDHYADUGW-UHFFFAOYSA-N

物化性质

• 沸点：
  352.8±34.0 °C(Predicted)
• 密度：
  1.161±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  4-acetylphenyl ethyl methylphosphonate 在 phosphotriesterase mutant G₆₀A 作用下， 以 甲醇 、 水 为溶剂， 以83%的产率得到(S)-4-acetylphenyl ethyl methylphosphonate
  参考文献：
  名称：

  Stereoselective Hydrolysis of Organophosphate Nerve Agents by the Bacterial Phosphotriesterase

  摘要：

  Organophosphorus compounds include many synthetic, neurotoxic substances that are commonly used as insecticides. The toxicity of these compounds is due to their ability to inhibit the enzyme acetylcholine esterase. Some of the most toxic organophosphates have been adapted for use as chemical warfare agents; the most well-known are GA, GB, GD, GF, VX, and VR. All of these compounds contain a chiral phosphorus center, with the S-P enantiomers being significantly more toxic than the R-P enantiomers. Phosphotriesterase (PTE) is an enzyme capable of detoxifying these agents, but the stereochemical preference of the wild-type enzyme is for the R-P enantiomers. A series of enantiomerically pure chiral nerve agent analogues containing the relevant phosphoryl centers found in GB, GD, GF, VX, and VR has been developed. Wild-type and mutant forms of PTE have been tested for their ability to hydrolyze this series of compounds. Mutant forms of PTE with significantly enhanced, as well as relaxed or reversed, stereoselectivity have been identified. A number of variants exhibited dramatically improved kinetic constants for the catalytic hydrolysis of the more toxic S-P enantiomers. Improvements of up to 3 orders of magnitude relative to the value of the wild-type enzyme were observed. Some of these mutants were tested against racemic mixtures of GB and GD. The kinetic constants obtained with the chiral nerve agent analogues accurately predict the improved activity and stereoselectivity against the authentic nerve agents used in this study.

  DOI：

  10.1021/bi101056m
• 作为产物：
  描述：

  甲基膦酞二氯 、 乙醇 、 对羟基苯乙酮 在 三乙胺 作用下， 生成 4-acetylphenyl ethyl methylphosphonate
  参考文献：
  名称：

  通过对映选择性酶库拆分手性磷酸盐、膦酸酯和次膦酸酯

  摘要：

  一系列 16 个手性磷酸酯、膦酸酯和次膦酸酯的对映体对用于确定细菌磷酸三酯酶和 15 种突变酶内固有的立体选择性歧视的广度。对于每种底物，离去基团是 4-羟基苯乙酮，而与磷核相连的其他两个基团由甲基、甲氧基、乙基、乙氧基、异丙氧基、苯基、苯氧基、环己基和环己氧基取代基的不对称混合物组成。对于野生型酶，两种对映异构体的相对水解速率范围为 3 到 5.4 x 10(5)。使用活性位点内的位点特异性突变的各种组合来创建修饰酶，其对映选择性特性发生改变。对于单点突变酶 G60A，立体选择性相对于野生型酶提高了 1-3 个数量级。获得了额外的突变体，其中对于本研究测试的 16 对对映异构体中的 13 对，立体选择性与野生型酶相反。最引人注目的例子是 4-乙酰苯基甲基苯基磷酸酯的水解。G60A 突变体优先水解 SP 对映异构体的因子为 3.7 x 10(5)。I106G/F132G/H257Y 突变体以

  DOI：

  10.1021/ja0658618

文献信息

• Resolution of Chiral Phosphate, Phosphonate, and Phosphinate Esters by an Enantioselective Enzyme Library
  作者：Charity Nowlan、Yingchun Li、Johannes C. Hermann、Timothy Evans、Joseph Carpenter、Eman Ghanem、Brian K. Shoichet、Frank M. Raushel

  DOI：10.1021/ja0658618

  日期：2006.12.1

  phosphotriesterase and 15 mutant enzymes. For each substrate, the leaving group was 4-hydroxyacetophenone while the other two groups attached to the phosphorus core consisted of an asymmetric mixture of methyl, methoxy, ethyl, ethoxy, isopropoxy, phenyl, phenoxy, cyclohexyl, and cyclohexoxy substituents. For the wild-type enzyme, the relative rates of hydrolysis for the two enantiomers ranged from 3 to 5.4 x 10(5)

  一系列 16 个手性磷酸酯、膦酸酯和次膦酸酯的对映体对用于确定细菌磷酸三酯酶和 15 种突变酶内固有的立体选择性歧视的广度。对于每种底物，离去基团是 4-羟基苯乙酮，而与磷核相连的其他两个基团由甲基、甲氧基、乙基、乙氧基、异丙氧基、苯基、苯氧基、环己基和环己氧基取代基的不对称混合物组成。对于野生型酶，两种对映异构体的相对水解速率范围为 3 到 5.4 x 10(5)。使用活性位点内的位点特异性突变的各种组合来创建修饰酶，其对映选择性特性发生改变。对于单点突变酶 G60A，立体选择性相对于野生型酶提高了 1-3 个数量级。获得了额外的突变体，其中对于本研究测试的 16 对对映异构体中的 13 对，立体选择性与野生型酶相反。最引人注目的例子是 4-乙酰苯基甲基苯基磷酸酯的水解。G60A 突变体优先水解 SP 对映异构体的因子为 3.7 x 10(5)。I106G/F132G/H257Y 突变体以
• Stereoselective Hydrolysis of Organophosphate Nerve Agents by the Bacterial Phosphotriesterase
  作者：Ping-Chuan Tsai、Andrew Bigley、Yingchun Li、Eman Ghanem、C. Linn Cadieux、Shane A. Kasten、Tony E. Reeves、Douglas M. Cerasoli、Frank M. Raushel

  DOI：10.1021/bi101056m

  日期：2010.9.21

  Organophosphorus compounds include many synthetic, neurotoxic substances that are commonly used as insecticides. The toxicity of these compounds is due to their ability to inhibit the enzyme acetylcholine esterase. Some of the most toxic organophosphates have been adapted for use as chemical warfare agents; the most well-known are GA, GB, GD, GF, VX, and VR. All of these compounds contain a chiral phosphorus center, with the S-P enantiomers being significantly more toxic than the R-P enantiomers. Phosphotriesterase (PTE) is an enzyme capable of detoxifying these agents, but the stereochemical preference of the wild-type enzyme is for the R-P enantiomers. A series of enantiomerically pure chiral nerve agent analogues containing the relevant phosphoryl centers found in GB, GD, GF, VX, and VR has been developed. Wild-type and mutant forms of PTE have been tested for their ability to hydrolyze this series of compounds. Mutant forms of PTE with significantly enhanced, as well as relaxed or reversed, stereoselectivity have been identified. A number of variants exhibited dramatically improved kinetic constants for the catalytic hydrolysis of the more toxic S-P enantiomers. Improvements of up to 3 orders of magnitude relative to the value of the wild-type enzyme were observed. Some of these mutants were tested against racemic mixtures of GB and GD. The kinetic constants obtained with the chiral nerve agent analogues accurately predict the improved activity and stereoselectivity against the authentic nerve agents used in this study.