(-)-brevenal | 776331-34-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧杂环己烷
• 英文名称: (-)-brevenal
• 英文别名: brevenal；brevenal from the marine dinoflagellate Karenia brevis；(2E,4E)-7-[(1S,3R,5S,7S,8S,10R,12S,13S,15R,18S,20R,21S,24R)-20-[(3Z)-hexa-3,5-dienyl]-12,21-dihydroxy-7,10,15,21-tetramethyl-4,9,14,19,25-pentaoxapentacyclo[13.10.0.03,13.05,10.018,24]pentacosan-8-yl]-3,4-dimethylhepta-2,4-dienal
• CAS: 776331-34-1
• 化学式: C₃₉H₆₀O₈
• 分子量: 656.901
• InChiKey: JPBOABGEVHVPNM-LPEULFRDSA-N

物化性质

• 沸点：
  767.0±60.0 °C(Predicted)
• 密度：
  1.069±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6.2
• 重原子数：
  47
• 可旋转键数：
  9
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.77
• 拓扑面积：
  104
• 氢给体数：
  2
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  (-)-brevenal 、 D-生物素酰肼 在 phosphotungstic acid 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 4.0h， 以41%的产率得到
  参考文献：
  名称：

  Development of a Fluorescence Assay for the Characterization of Brevenal Binding to Rat Brain Synaptosomes

  摘要：

  The marine dinoflagellate Karenia brevis produces a family of neurotoxins known as brevetoxins. Brevetoxins elicit their effects by binding to and activating voltage-sensitive sodium channels (VSSCs) in cell membranes. K. brevis also produces brevenal, a brevetoxin antagonist, which is able to inhibit and/or negate many of the detrimental effects of brevetoxins. Brevenal binding to VSSCs has yet to be fully characterized, in part due to the difficulty and expense of current techniques. In this study, we have developed a novel fluorescence binding assay for the brevenal binding site. Several fluorescent compounds were conjugated to brevenal to assess their effects on brevenal binding. The assay was validated against the radioligand assay for the brevenal binding site and yielded comparable equilibrium inhibition constants. The fluorescence-based assay was shown to be quicker and far less expensive and did not generate radioactive waste or need facilities for handling radioactive materials. In-depth studies using the brevenal conjugates showed that, while brevenal conjugates do bind to a binding site in the VSSC protein complex, they are not displaced by known VSSC site specific ligands. As such, brevenal elicits its action through a novel mechanism and/or currently unknown receptor site on VSSCs.

  DOI：

  10.1021/np500118p
• 作为产物：
  描述：

  (3S,4S)-7-(tert-Butyl-diphenyl-silanyloxy)-4-(4-methoxy-benzyloxy)-3-methyl-heptanenitrile 在 palladium dihydroxide 、 4 A molecular sieve 咪唑 、 2,6-二甲基吡啶 、 titanium(IV) isopropylate 、 盐酸 、 叔丁基过氧化氢 、 manganese(IV) oxide 、 N-碘代丁二酰亚胺 、 四氧化锇 、 9-borabicyclo[3.3.1]nonane dimer 、 正丁基锂 、 phosphate buffer 、 四丙基高钌酸铵 、 噻吩-2-甲酸亚铜(I) 、 tris(dibenzylideneacetone)dipalladium (0) 、 LiDBB 、 pyridine-SO3 complex 、 L-(+)-酒石酸二乙酯 、 三苯胂 、 dimethyl sulfide borane 、 (Sia)2BH 、 4 A molecular sieve 、 2,4,6-三氯苯甲酰氯 、 四丁基氟化铵 、 三(二甲氨基)锍二氟三甲基硅酸 、 水 、 氢气 、 双氧水 、 sodium hexamethyldisilazane 、 4-甲基苯磺酸吡啶 、 双(三甲基硅烷基)氨基钾 、 zinc trifluoromethanesulfonate 、 二异丁基氢化铝 、 碳酸氢钠 、 potassium carbonate 、 氟化氢吡啶 、 溶剂黄146 、 N-甲基吗啉氧化物 、 三乙胺 、 间氯过氧苯甲酸 、 2,3-二氯-5,6-二氰基-1,4-苯醌 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 甲醇 、 六甲基磷酰三胺 、 癸烷 、 正己烷 、 二氯甲烷 、 二甲基亚砜 、 N,N-二甲基甲酰胺 、 甲苯 、 乙腈 、 叔丁醇 为溶剂， 反应 104.25h， 生成 (-)-brevenal
  参考文献：
  名称：

  (-)-Brevenal 的全合成、结构修正和绝对构型

  摘要：

  最初为 brevenal 提出的结构 1 的全合成已完成，这是一种从佛罗里达赤潮甲藻中分离的无毒多环醚天然产物，Karenia brevis。合成的关键特征包括（i）基于我们开发的 Suzuki-Miyaura 偶联化学的五环聚醚骨架的会聚组装和（ii）通过使用铜（ I) 噻吩-2-羧酸酯 (CuTC) 促进的改良斯蒂尔偶联。合成材料和天然产物之间 NMR 谱的差异需要修改提议的结构。合成 1 与天然 brevenal 的详细光谱比较，以及海洋聚醚天然产物的假定生物合成途径，

  DOI：

  10.1021/ja066772y

文献信息

• Total Synthesis of Brevenal
  作者：Hiroyoshi Takamura、Shigetoshi Kikuchi、Yuichi Nakamura、Yuji Yamagami、Takayuki Kishi、Isao Kadota、Yoshinori Yamamoto

  DOI：10.1021/ol900769d

  日期：2009.6.18

  A total synthesis of brevenal is described. The pentacyclic ether core was constructed by the intramolecular allylation of α-acetoxy ether and subsequent ring-closing metathesis. Both of the diene side chains were introduced by Wittig olefination and a Horner−Wadsworth−Emmons reaction, respectively, in a highly stereoselective manner.

  描述了brevenal的全合成。五环醚核是通过α-乙酰氧基醚的分子内烯丙基化和随后的闭环复分解反应构建的。两个二烯侧链分别通过Wittig烯烃化和Horner-Wadsworth-Emmons反应以高度立体选择性的方式引入。
• Total synthesis of brevenal
  作者：Hiroyoshi Takamura、Yuji Yamagami、Takayuki Kishi、Shigetoshi Kikuchi、Yuichi Nakamura、Isao Kadota、Yoshinori Yamamoto

  DOI：10.1016/j.tet.2010.05.069

  日期：2010.7

  The convergent total synthesis of brevenal, a non-toxic brevetoxin antagonist, has been achieved. The ABC ring segment and the E ring precursor were connected by the intramolecular allylation followed by ring-closing metathesis to furnish the pentacyclic ether compound. An alternative route to the key synthetic intermediate, a pentacyclic ether core, was also examined. The right- and left-hand side

  已经实现了无毒性的brevetoxin拮抗剂brevenal的聚合全合成。ABC环段和E环前体通过分子内烯丙基化然后闭环易位连接以提供五环醚化合物。还研究了通往关键合成中间体五环醚核的另一种途径。Wittig和Horner–Wadsworth–Emmons反应分别引入了右侧链和左侧链，以提供brevenal（1）。
• Total Synthesis, Structure Revision, and Absolute Configuration of (−)-Brevenal
  作者：Haruhiko Fuwa、Makoto Ebine、Andrea J. Bourdelais、Daniel G. Baden、Makoto Sasaki

  DOI：10.1021/ja066772y

  日期：2006.12.1

  E)-dienal side chain by using copper(I) thiophen-2-carboxylate (CuTC)-promoted modified Stille coupling. The disparity of NMR spectra between the synthetic material and the natural product required a revision of the proposed structure. Detailed spectroscopic comparison of synthetic 1 with natural brevenal, coupled with the postulated biosynthetic pathway for marine polyether natural products, suggested

  最初为 brevenal 提出的结构 1 的全合成已完成，这是一种从佛罗里达赤潮甲藻中分离的无毒多环醚天然产物，Karenia brevis。合成的关键特征包括（i）基于我们开发的 Suzuki-Miyaura 偶联化学的五环聚醚骨架的会聚组装和（ii）通过使用铜（ I) 噻吩-2-羧酸酯 (CuTC) 促进的改良斯蒂尔偶联。合成材料和天然产物之间 NMR 谱的差异需要修改提议的结构。合成 1 与天然 brevenal 的详细光谱比较，以及海洋聚醚天然产物的假定生物合成途径，
• Development of a Fluorescence Assay for the Characterization of Brevenal Binding to Rat Brain Synaptosomes
  作者：Jennifer R. McCall、Allan J. Goodman、Henry M. Jacocks、Alysha M. Thompson、Daniel G. Baden、Andrea J. Bourdelais

  DOI：10.1021/np500118p

  日期：2014.9.26

  The marine dinoflagellate Karenia brevis produces a family of neurotoxins known as brevetoxins. Brevetoxins elicit their effects by binding to and activating voltage-sensitive sodium channels (VSSCs) in cell membranes. K. brevis also produces brevenal, a brevetoxin antagonist, which is able to inhibit and/or negate many of the detrimental effects of brevetoxins. Brevenal binding to VSSCs has yet to be fully characterized, in part due to the difficulty and expense of current techniques. In this study, we have developed a novel fluorescence binding assay for the brevenal binding site. Several fluorescent compounds were conjugated to brevenal to assess their effects on brevenal binding. The assay was validated against the radioligand assay for the brevenal binding site and yielded comparable equilibrium inhibition constants. The fluorescence-based assay was shown to be quicker and far less expensive and did not generate radioactive waste or need facilities for handling radioactive materials. In-depth studies using the brevenal conjugates showed that, while brevenal conjugates do bind to a binding site in the VSSC protein complex, they are not displaced by known VSSC site specific ligands. As such, brevenal elicits its action through a novel mechanism and/or currently unknown receptor site on VSSCs.