diphenyl [(1R,3S,5R,10S,13R,15S,17R,23S)-8,8,15,17-tetramethyl-4,7,9,14,18,24-hexaoxapentacyclo[13.9.0.03,13.05,10.017,23]tetracos-19-en-19-yl] phosphate | 378741-91-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机磷酸及其衍生物
• 英文名称: diphenyl [(1R,3S,5R,10S,13R,15S,17R,23S)-8,8,15,17-tetramethyl-4,7,9,14,18,24-hexaoxapentacyclo[13.9.0.03,13.05,10.017,23]tetracos-19-en-19-yl] phosphate
• CAS: 378741-91-4
• 化学式: C₃₄H₄₃O₁₀P
• 分子量: 642.683
• InChiKey: VPORVHKHMVCDNI-RUGFNWGASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.8
• 重原子数：
  45
• 可旋转键数：
  6
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.59
• 拓扑面积：
  100
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  、 diphenyl [(1R,3S,5R,10S,13R,15S,17R,23S)-8,8,15,17-tetramethyl-4,7,9,14,18,24-hexaoxapentacyclo[13.9.0.03,13.05,10.017,23]tetracos-19-en-19-yl] phosphate 在 caesium carbonate 、 1,1'-双(二苯膦基)二茂铁二氯化钯(II)二氯甲烷复合物 作用下， 以 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 10.25h， 以277 mg的产率得到
  参考文献：
  名称：

  Design and Synthesis of Skeletal Analogues of Gambierol: Attenuation of Amyloid-β and Tau Pathology with Voltage-Gated Potassium Channel and N-Methyl-d-aspartate Receptor Implications

  摘要：

  Gambierol is a potent neurotoxin that belongs to the family of marine polycyclic ether natural products and primarily targets voltage-gated potassium channels (K-v channels) in excitable membranes. Previous work in the chemistry of marine polycyclic ethers has suggested the critical importance of the full length of polycyclic ether skeleton for potent biological activity. Although we have previously investigated structure-activity relationships (SARs) of the peripheral functionalities of gambierol, it remained unclear whether the whole polycyclic ether skeleton is needed for its cellular activity. In this work, we designed and synthesized two truncated skeletal analogues of gambierol comprising the EFGH- and BCDEFGH-rings of the parent compound, both of which surprisingly showed similar potency to gambierol on voltage gated potassium channels (K-v) inhibition. Moreover, we examined the effect of these compounds in an in vitro model of Alzheimer's disease (AD) obtained from triple transgenic (3xTg-AD) mice, which expresses amyloid beta (A beta) accumulation and tau hyperphosphorylation. In vitro preincubation of the cells with the compounds resulted in significant inhibition of K+ currents, a reduction in the extra- and intracellular levels of A beta, and a decrease in the levels of hyperphosphorylated tau. In addition, pretreatment with these compounds reduced the steady-state level of the N-methyl-D-aspartate (NMDA) receptor subunit 2A without affecting the 2B subunit. The involvement of glutamate receptors was further suggested by the blockage of the effect of gambierol on tau hyperphosphorylation by glutamate receptor antagonists. The present study constitutes the first discovery of skeletally simplified, designed polycyclic ethers with potent cellular activity and demonstrates the utility of gambierol and its synthetic analogues as chemical probes for understanding the function of K-v channels as well as the molecular mechanism of A beta metabolism modulated by NMDA receptors.

  DOI：

  10.1021/ja300565t
• 作为产物：
  描述：

  4-((4aR,5aS,6aR,8S,9R,10aS,11aR,13aS)-9-Hydroxy-2,2,9,10a-tetramethyl-dodecahydro-1,3,5,7,11-pentaoxa-benzo[4,5]cyclohepta[1,2-b]naphthalen-8-yl)-butyric acid 在 六甲基磷酰三胺 、 2,4,6-三氯苯甲酰氯 、 双(三甲基硅烷基)氨基钾 、 三乙胺 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 2.0h， 生成 diphenyl [(1R,3S,5R,10S,13R,15S,17R,23S)-8,8,15,17-tetramethyl-4,7,9,14,18,24-hexaoxapentacyclo[13.9.0.03,13.05,10.017,23]tetracos-19-en-19-yl] phosphate
  参考文献：
  名称：

  (-)-甘比罗的全合成

  摘要：

  [结构：见正文] 首次全合成甘比尔醇，一种海洋多环醚毒素，已经实现。该合成采用 Pd(PPh3)4/CuCl/LiCl 促进的 Stille 偶联，用于立体选择性构建敏感的三烯侧链，其中包括共轭 (Z,Z)-二烯部分。

  DOI：

  10.1021/ja028167a

文献信息

• Synthetic Studies toward Gambierol. Convergent Synthesis of the Octacyclic Polyether Core
  作者：Haruhiko Fuwa、Makoto Sasaki、Kazuo Tachibana

  DOI：10.1021/ol0166597

  日期：2001.11.1

  [structure: see text]. A convergent synthetic route to the octacyclic polyether core of gambierol, a marine polycyclic ether toxin, has been developed. The synthesis involves construction of two fragments representing the ABC and EFGH ring systems followed by their coupling via a B-alkyl Suzuki reaction.

  [结构：见文字]。已经开发出一条趋同的合成途径，可以到达海洋生物多环醚毒素甘比罗尔的八环聚醚核心。合成包括构建代表ABC和EFGH环系统的两个片段，然后通过B-烷基Suzuki反应进行偶联。
• Total Synthesis of (−)-Gambierol
  作者：Haruhiko Fuwa、Noriko Kainuma、Kazuo Tachibana、Makoto Sasaki

  DOI：10.1021/ja028167a

  日期：2002.12.1

  [structure: see text] The first total synthesis of gambierol, a marine polycyclic ether toxin, has been achieved. The synthesis features the Pd(PPh3)4/CuCl/LiCl-promoted Stille coupling for the stereoselective construction of the sensitive triene side chain that includes a conjugated (Z,Z)-diene moiety.

  [结构：见正文] 首次全合成甘比尔醇，一种海洋多环醚毒素，已经实现。该合成采用 Pd(PPh3)4/CuCl/LiCl 促进的 Stille 偶联，用于立体选择性构建敏感的三烯侧链，其中包括共轭 (Z,Z)-二烯部分。
• Design and Synthesis of Skeletal Analogues of Gambierol: Attenuation of Amyloid-β and Tau Pathology with Voltage-Gated Potassium Channel and <i>N</i>-Methyl-<scp>d</scp>-aspartate Receptor Implications
  作者：Eva Alonso、Haruhiko Fuwa、Carmen Vale、Yuto Suga、Tomomi Goto、Yu Konno、Makoto Sasaki、Frank M. LaFerla、Mercedes R. Vieytes、Lydia Giménez-Llort、Luis M. Botana

  DOI：10.1021/ja300565t

  日期：2012.5.2

  Gambierol is a potent neurotoxin that belongs to the family of marine polycyclic ether natural products and primarily targets voltage-gated potassium channels (K-v channels) in excitable membranes. Previous work in the chemistry of marine polycyclic ethers has suggested the critical importance of the full length of polycyclic ether skeleton for potent biological activity. Although we have previously investigated structure-activity relationships (SARs) of the peripheral functionalities of gambierol, it remained unclear whether the whole polycyclic ether skeleton is needed for its cellular activity. In this work, we designed and synthesized two truncated skeletal analogues of gambierol comprising the EFGH- and BCDEFGH-rings of the parent compound, both of which surprisingly showed similar potency to gambierol on voltage gated potassium channels (K-v) inhibition. Moreover, we examined the effect of these compounds in an in vitro model of Alzheimer's disease (AD) obtained from triple transgenic (3xTg-AD) mice, which expresses amyloid beta (A beta) accumulation and tau hyperphosphorylation. In vitro preincubation of the cells with the compounds resulted in significant inhibition of K+ currents, a reduction in the extra- and intracellular levels of A beta, and a decrease in the levels of hyperphosphorylated tau. In addition, pretreatment with these compounds reduced the steady-state level of the N-methyl-D-aspartate (NMDA) receptor subunit 2A without affecting the 2B subunit. The involvement of glutamate receptors was further suggested by the blockage of the effect of gambierol on tau hyperphosphorylation by glutamate receptor antagonists. The present study constitutes the first discovery of skeletally simplified, designed polycyclic ethers with potent cellular activity and demonstrates the utility of gambierol and its synthetic analogues as chemical probes for understanding the function of K-v channels as well as the molecular mechanism of A beta metabolism modulated by NMDA receptors.