2-(2-Chlor-ethoxy)-4H-1,3,2-benzodioxaphosphorin-2-oxid | 5979-07-7

• 分子结构分类: 有机化合物 - 苯类化合物
• 英文名称: 2-(2-Chlor-ethoxy)-4H-1,3,2-benzodioxaphosphorin-2-oxid
• 英文别名: 2-(2-chloroethoxy)-2-oxido-4H-1,3,2-benzodioxaphosphinin-2-ium
• CAS: 5979-07-7
• 化学式: C₉H₁₀ClO₄P
• 分子量: 248.603
• InChiKey: VLMBIOSINOTDDV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  50.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  水杨醇 、 alkaline earth salt of/the/ methylsulfuric acid 在 三乙胺 、 三氯氧磷 作用下， 以 二氯甲烷 为溶剂， 生成 2-(2-Chlor-ethoxy)-4H-1,3,2-benzodioxaphosphorin-2-oxid
  参考文献：
  名称：

  Ethyl Octylphosphonofluoridate and Analogs: Optimized Inhibitors of Neuropathy Target Esterase

  摘要：

  The relation between organophosphorus-induced delayed neuropathy (OPIDN) and brain neuropathy target esterase (NTE) inhibition is further examined in hens by structure-activity studies leading to the most potent in vitro NTE inhibitors known, which are then examined for their neuropathic effects in vivo in hens. The principal compounds studied are alkyl alkylphosphonofluoridates and dialkyl phosphorofluoridates. Potencies that exceed those of any previous inhibitors under the standard in vitro NTE assay condition are achieved with alkyl octylphosphonofluoridates (ethyl, isopropyl, 2-chloroethyl, 2-bromoethyl, 2-iodoethyl, and 3-iodopropyl), 2-iodoethyl hexylphosphonofluoridate, and dialkyl phosphorofluoridates [ethyl, nonyl; di(2-iodoethyl); di(3-iodopropyl); dipentyl]. The concentration for 50% NTE inhibition (I-50) Of these compounds is 0.04-0.14 nM. Thirty-eight less active analogs including aryl phosphonates and aryl phosphates give I(50)s of 0.27-4730 nM. For highest potency the summation of length of the alkyl and alkoxy groups on phosphorus should be 12-16 atoms (carbons, oxygens, and phosphorus) (a terminal iodo substituent in this relationship is equivalent to a propyl group). In general, the phosphonofluoridates and phosphorofluoridates are more active than analogs with leaving groups other than fluorine, i.e., phenoxy, 4-nitrophenoxy, 4-cyanophenoxy, 3,4-dichlorophenoxy, and 4H-1,3,2-benzodioxaphosphorin. Considering the exceptional potencies of ethyl and 2-iodoethyl octylphosphonofluoridates (I50S of 0.04 and 0.09 nM, respectively), it is not surprising that at ip doses of 10-30 mg/kg they inhibit brain NTE by 82-97% 48 h after treatment. However, unexpectedly, only the ethyl but not the 2-iodoethyl compound induces OPIDN, possibly associated with the greater ease of aging for NTE inhibited with the ethyl than the 2-iodoethyl compound (as observed in vitro both spontaneously and on induction by potassium fluoride). The high potency of ethyl octylphosphonofluoridate and several analogs as NTE inhibitors suggests that they are useful probes in determining the toxicological features of this secondary lesion for organophosphorus poisoning.

  DOI：

  10.1021/tx00050a011

文献信息

• Ethyl Octylphosphonofluoridate and Analogs: Optimized Inhibitors of Neuropathy Target Esterase
  作者：Shao-Yong Wu、John E. Casida

  DOI：10.1021/tx00050a011

  日期：1995.12

  The relation between organophosphorus-induced delayed neuropathy (OPIDN) and brain neuropathy target esterase (NTE) inhibition is further examined in hens by structure-activity studies leading to the most potent in vitro NTE inhibitors known, which are then examined for their neuropathic effects in vivo in hens. The principal compounds studied are alkyl alkylphosphonofluoridates and dialkyl phosphorofluoridates. Potencies that exceed those of any previous inhibitors under the standard in vitro NTE assay condition are achieved with alkyl octylphosphonofluoridates (ethyl, isopropyl, 2-chloroethyl, 2-bromoethyl, 2-iodoethyl, and 3-iodopropyl), 2-iodoethyl hexylphosphonofluoridate, and dialkyl phosphorofluoridates [ethyl, nonyl; di(2-iodoethyl); di(3-iodopropyl); dipentyl]. The concentration for 50% NTE inhibition (I-50) Of these compounds is 0.04-0.14 nM. Thirty-eight less active analogs including aryl phosphonates and aryl phosphates give I(50)s of 0.27-4730 nM. For highest potency the summation of length of the alkyl and alkoxy groups on phosphorus should be 12-16 atoms (carbons, oxygens, and phosphorus) (a terminal iodo substituent in this relationship is equivalent to a propyl group). In general, the phosphonofluoridates and phosphorofluoridates are more active than analogs with leaving groups other than fluorine, i.e., phenoxy, 4-nitrophenoxy, 4-cyanophenoxy, 3,4-dichlorophenoxy, and 4H-1,3,2-benzodioxaphosphorin. Considering the exceptional potencies of ethyl and 2-iodoethyl octylphosphonofluoridates (I50S of 0.04 and 0.09 nM, respectively), it is not surprising that at ip doses of 10-30 mg/kg they inhibit brain NTE by 82-97% 48 h after treatment. However, unexpectedly, only the ethyl but not the 2-iodoethyl compound induces OPIDN, possibly associated with the greater ease of aging for NTE inhibited with the ethyl than the 2-iodoethyl compound (as observed in vitro both spontaneously and on induction by potassium fluoride). The high potency of ethyl octylphosphonofluoridate and several analogs as NTE inhibitors suggests that they are useful probes in determining the toxicological features of this secondary lesion for organophosphorus poisoning.