(+)-1,10-epoxy-11β,13-dihydrocostunolide

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: (+)-1,10-epoxy-11β,13-dihydrocostunolide
• 英文别名: (1S,4S,6R,9E,11S,14S)-4,9,14-trimethyl-5,12-dioxatricyclo[9.3.0.04,6]tetradec-9-en-13-one
• 化学式: C₁₅H₂₂O₃
• 分子量: 250.338
• InChiKey: IFKHYXLHXVVRSL-SLKIWDFXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  18
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  38.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (+)-1,10-epoxy-11β,13-dihydrocostunolide 在 二氯二茂钛 、 水 2,4,6-三甲基吡啶 、 锰 、 selenium(IV) oxide 、 苯基氯化硒 、 2,4,6-collidine hydrochloride 、 双(三甲基硅烷基)氨基钾 、 戴斯-马丁氧化剂 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 对甲苯磺酰肼 作用下， 以 四氢呋喃 为溶剂， 反应 7.0h， 生成 (+/-)-Tuberiferin
  参考文献：
  名称：

  杜鹃花苷的统一合成，将仿生策略与均相催化和自由基化学相结合。

  摘要：

  [反应：见正文]已经开发了合成12，6-和12，8-十二烷内酯的通用方法。关键步骤是钛环茂金属催化可及的环氧锗烷的自由基环化。新型试剂2,4,6-三甲基-1-三甲基甲硅烷基吡啶鎓氯化物，与二恶英兼容，能够从Cp（2）Ti（Cl）H和Cp（2）Ti（Cl）再生Cp（2）TiCl（2） ）OAc在导致环外烯烃的催化循环中起着重要作用。

  DOI：

  10.1021/ol034510k
• 作为产物：
  描述：

  木香烃内酯 在 sodium tetrahydroborate 、 sodium acetate 、 间氯过氧苯甲酸 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 1.0h， 生成 (+)-1,10-epoxy-11β,13-dihydrocostunolide
  参考文献：
  名称：

  Sesquiterpene Lactones with Potential Use as Natural Herbicide Models (I):  trans,trans-Germacranolides

  摘要：

  A structure-activity study to evaluate the effect of the trans,trans-germacranolide sesquiterpene lactones costunolide, parthenolide, and their 1,10-epoxy and 11,13-dihydro derivatives (in a range of 100-0.001 mu M) on the growth and germination of several mono and dicotyledon target species is accomplished. Results are compared with those obtained in the same bioassay with an internal standard, the commercial herbicide Logran, to validate the results with a known active formulation and to compare the results with a commercial product to test their potential use as natural herbicide models. These compounds appear to have a more selective effects on the radicle growth of monocotyledons. Certain factors such as the presence of nucleophile-acceptor groups and their accessibility enhance the inhibitory activity. The levels of radicle inhibition obtained with some compounds on wheat are totally comparable to those of Logran and allow to propose them as lead compounds.

  DOI：

  10.1021/jf9903612

文献信息

• Effects of Solvents and Water in Ti(III)-Mediated Radical Cyclizations of Epoxygermacrolides. Straightforward Synthesis and Absolute Stereochemistry of (+)-3α-Hydroxyreynosin and Related Eudesmanolides
  作者：Alejandro F. Barrero、J. Enrique Oltra、Juan M. Cuerva、Antonio Rosales

  DOI：10.1021/jo016277e

  日期：2002.4.1

  was carried out using different solvents and additives to develop an expeditious procedure for the synthesis of natural eudesmanolides via free-radical chemistry. In the nonhalogenated solvents THF, benzene, and toluene the transannular cyclization, initiated by the homolytic opening of the oxirane ring, selectively led to the desired exocyclic alkene 5. When water was added to THF, however, the main

  Cp（2）TiCl介导的1,10-环氧-11beta，13-二氢木香酚（4）的重排使用不同的溶剂和添加剂进行，以开发通过自由基化学合成天然eudesmanolides的快速程序。在非卤代溶剂THF，苯和甲苯中，由环氧乙烷环的均相开环引发的环环环化选择性地导致形成所需的环外烯烃5.然而，将水添加到THF中时，主要产物是还原的奥德曼醇化物8。 D（2）O的实验证实8的H-4来自水。为了使这些结果合理化，提出了一种基于水溶剂化的Cp（2）TiCl复合物的机理假说。最后，在化学制备（+）-3α-羟基雷诺菌素（1）和（+）-雷诺菌素（17）的关键步骤中，已证明使用该试剂可证明Cp（2）TiCl可以用于合成天然奥地香奈德。这些合成证实了1的化学结构，并建立了天然产物1和17的绝对立体化学。获得的结果表明，采用仿生策略与Ti（III）介导的自由基化学的结合可能代表了一种对映体特异性合成170多种在C-4
• Ti-catalyzed transannular cyclization of epoxygermacrolides. Synthesis of antifungal (+)-tuberiferine and (+)-dehydrobrachylaenolide
  作者：José Justicia、Luis Álvarez de Cienfuegos、Rosa E. Estévez、Miguel Paradas、Ana M. Lasanta、Juan L. Oller、Antonio Rosales、Juan M. Cuerva、J. Enrique Oltra

  DOI：10.1016/j.tet.2008.08.114

  日期：2008.12

  We present a divergent strategy for the stereoselective synthesis of both eudesmanolides (+)-tuberiferine and (+)-brachylaenolide starting from the accessible germacrolide (+)-costunolide. The key steps of these syntheses are the Ti-catalyzed transannular cyclization of a 1,4-epoxygermacrolide in the presence or absence of water, respectively. The catalytic cycle operating in the presence of water

  我们提出了从可及的马卡德利德（+）-木香酚开始的对映体甘露内酯（+）-胡椒碱和（+）-brachylaenolide的立体选择性合成的不同策略。这些合成的关键步骤分别是在有水或无水的情况下，Ti催化的1,4-环氧锗大环内酯的环环过环化。在水的存在下进行的催化循环可能涉及通过从水络合物Cp 2 Ti III（OH 2）Cl进行H原子转移来还原叔自由基。在无水条件下的催化循环大概是通过叔自由基和Cp 2 Ti III的混合歧化而发生的Cl。合成的（+）-tuberiferine和（+）-brachylaenolide具有对Phycomyces blakesleeanus的抗真菌效力，与抗真菌治疗的金标准B两性霉素B相当甚至更高。
• Sesquiterpene Lactones with Potential Use as Natural Herbicide Models (I):  <i>trans,trans-</i>Germacranolides
  作者：Francisco A. Macías、Juan C. G. Galindo、Diego Castellano、Raúl F. Velasco

  DOI：10.1021/jf9903612

  日期：1999.10.1

  A structure-activity study to evaluate the effect of the trans,trans-germacranolide sesquiterpene lactones costunolide, parthenolide, and their 1,10-epoxy and 11,13-dihydro derivatives (in a range of 100-0.001 mu M) on the growth and germination of several mono and dicotyledon target species is accomplished. Results are compared with those obtained in the same bioassay with an internal standard, the commercial herbicide Logran, to validate the results with a known active formulation and to compare the results with a commercial product to test their potential use as natural herbicide models. These compounds appear to have a more selective effects on the radicle growth of monocotyledons. Certain factors such as the presence of nucleophile-acceptor groups and their accessibility enhance the inhibitory activity. The levels of radicle inhibition obtained with some compounds on wheat are totally comparable to those of Logran and allow to propose them as lead compounds.
• Unified Synthesis of Eudesmanolides, Combining Biomimetic Strategies with Homogeneous Catalysis and Free-Radical Chemistry
  作者：Alejandro F. Barrero、Antonio Rosales、Juan M. Cuerva、J. Enrique Oltra

  DOI：10.1021/ol034510k

  日期：2003.5.1

  [reaction: see text] A general procedure for the synthesis of both 12,6- and 12,8-eudesmanolides has been developed. The key step is the titanocene-catalyzed radical cyclization of accessible epoxygermacrolides. The novel reagent 2,4,6-trimethyl-1-trimethylsilylpyridinium chloride, both compatible with oxiranes and capable of regenerating Cp(2)TiCl(2) from Cp(2)Ti(Cl)H and Cp(2)Ti(Cl)OAc, played an

  [反应：见正文]已经开发了合成12，6-和12，8-十二烷内酯的通用方法。关键步骤是钛环茂金属催化可及的环氧锗烷的自由基环化。新型试剂2,4,6-三甲基-1-三甲基甲硅烷基吡啶鎓氯化物，与二恶英兼容，能够从Cp（2）Ti（Cl）H和Cp（2）Ti（Cl）再生Cp（2）TiCl（2） ）OAc在导致环外烯烃的催化循环中起着重要作用。