{[4-(2-{4-[(diethoxyphosphoryl)difluoromethyl]benzyloxy}ethoxymethyl)phenyl]difluoromethyl}phosphonic acid

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: {[4-(2-{4-[(diethoxyphosphoryl)difluoromethyl]benzyloxy}ethoxymethyl)phenyl]difluoromethyl}phosphonic acid
• 英文别名: [[4-[2-[[4-[Difluoro(phosphono)methyl]phenyl]methoxy]ethoxymethyl]phenyl]-difluoromethyl]phosphonic acid
• 化学式: C₁₈H₂₀F₄O₈P₂
• 分子量: 502.293
• InChiKey: REVIUJFTTYMXEI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.3
• 重原子数：
  32
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  134
• 氢给体数：
  4
• 氢受体数：
  12

反应信息

• 作为产物：
  描述：

  4-碘苄基溴 在 三甲基溴硅烷 、 silver(l) oxide 、 镉 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 116.5h， 生成 {[4-(2-{4-[(diethoxyphosphoryl)difluoromethyl]benzyloxy}ethoxymethyl)phenyl]difluoromethyl}phosphonic acid
  参考文献：
  名称：

  Structure of Protein Tyrosine Phosphatase 1B in Complex with Inhibitors Bearing Two Phosphotyrosine Mimetics

  摘要：

  Protein tyrosine phosphatases (PTPases) are signal-transducing enzymes that dephosphorylate intracellular proteins that have phosphorylated tyrosine residues. It has been demonstrated that protein tyrosine phosphatase 1B (PTP1B) is an attractive therapeutic target because of its involvement in regulating insulin sensitivity (Elcheby et al. Science 1999,283, 1544-1548). The identification of a second binding site in PTP1B (Puius et al., Proc. Natl. Acad. Sci. U.S.A 1997, 94, 13420-13425) suggests a new strategy for inhibitor design, where appropriate compounds may be made to simultaneously occupy both binding sites to gain much higher affinity and selectivity. To test this hypothesis and gain further insights into the structural basis of inhibitor binding, we have determined the crystal structure of PTP1B complexed with two non-peptidyl inhibitors, 4 and 5, both of which contain two aryl difluoromethylenephosphonic acid groups, a nonhydrolyzable phosphate mimetic. The structures were determined and refined to 2.35 and 2.50 Angstrom resolution, respectively. Although one of the inhibitors seems to have satisfied the perceived requirement for dual binding, it did not bind both the active site and the adjacent noncatalytic binding site as expected. The second or distal phosphonate group instead extends into the solvent and makes water-mediated interactions with Arg-47. The selectivity of the more potent of these two inhibitors, as well as four other inhibitors bearing two such phosphate mimetics for PTP1B versus seven other PTPases, was examined, In general, selectivity was modest to good when compared to PTPases Cdc25a, PTPmeg-1, PTP beta, and CD45. However, selectivity was generally poor when compared to other PTPases such as SHP-1, SHP-2, and especially TCPTP, for which almost no selectivity was found. The implications these results have concerning the utility of dual-binding inhibitors are discussed.

  DOI：

  10.1021/jm010266w

文献信息

• Structure of Protein Tyrosine Phosphatase 1B in Complex with Inhibitors Bearing Two Phosphotyrosine Mimetics
  作者：Zongchao Jia、Qilu Ye、A. Nicole Dinaut、Qingping Wang、Deena Waddleton、Paul Payette、Chidambaram Ramachandran、Brian Kennedy、Gabriel Hum、Scott D. Taylor

  DOI：10.1021/jm010266w

  日期：2001.12.1

  Protein tyrosine phosphatases (PTPases) are signal-transducing enzymes that dephosphorylate intracellular proteins that have phosphorylated tyrosine residues. It has been demonstrated that protein tyrosine phosphatase 1B (PTP1B) is an attractive therapeutic target because of its involvement in regulating insulin sensitivity (Elcheby et al. Science 1999,283, 1544-1548). The identification of a second binding site in PTP1B (Puius et al., Proc. Natl. Acad. Sci. U.S.A 1997, 94, 13420-13425) suggests a new strategy for inhibitor design, where appropriate compounds may be made to simultaneously occupy both binding sites to gain much higher affinity and selectivity. To test this hypothesis and gain further insights into the structural basis of inhibitor binding, we have determined the crystal structure of PTP1B complexed with two non-peptidyl inhibitors, 4 and 5, both of which contain two aryl difluoromethylenephosphonic acid groups, a nonhydrolyzable phosphate mimetic. The structures were determined and refined to 2.35 and 2.50 Angstrom resolution, respectively. Although one of the inhibitors seems to have satisfied the perceived requirement for dual binding, it did not bind both the active site and the adjacent noncatalytic binding site as expected. The second or distal phosphonate group instead extends into the solvent and makes water-mediated interactions with Arg-47. The selectivity of the more potent of these two inhibitors, as well as four other inhibitors bearing two such phosphate mimetics for PTP1B versus seven other PTPases, was examined, In general, selectivity was modest to good when compared to PTPases Cdc25a, PTPmeg-1, PTP beta, and CD45. However, selectivity was generally poor when compared to other PTPases such as SHP-1, SHP-2, and especially TCPTP, for which almost no selectivity was found. The implications these results have concerning the utility of dual-binding inhibitors are discussed.