7-hydroxy-8-allylcoumarin | 55136-72-6

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 7-hydroxy-8-allylcoumarin
• 英文别名: 8-allyl-7-hydroxy-2H-chromen-2-one；8-Allyl-7-hydroxycoumarin；JS-B；8-allyl-7-hydroxy-coumarin；8-Allyl-7-hydroxy-cumarin；7-Hydroxy-8-prop-2-enylchromen-2-one
• CAS: 55136-72-6
• 化学式: C₁₂H₁₀O₃
• 分子量: 202.21
• InChiKey: BVHRLXSFKYPLBR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  7-hydroxy-8-allylcoumarin 在 RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 、 potassium carbonate 、 potassium iodide 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 7.0h， 生成 蛇床子提取物
  参考文献：
  名称：

  Synthesis and anthelmintic activity of osthol analogs against Dactylogyrus intermedius in goldfish

  摘要：

  In an attempt to develop novel anthelmintic agents, our previously isolated osthol was used as lead structures for further optimization. In our research, a series of coumarin analogs, prepared from 7-hydroxy coumarin or 7-hydroxy-4-methyl coumarin, have been evaluated for their anthelmintic activities. In all of the compounds, 6 and 7 were first synthesized, and their structures were identified based on NMR and MS values. Among the candidates, 8-allyl-7-allyloxycoumarin showed better anthelmintic activity than other compounds against Dactylogyrus infestation with EC50 value of 1.81 mg/L The quantitative structure-activity relationship (QSAR) of 16 osthol analogs with anthelmintic activity expressed as pEC(50) and toxicity to goldfish expressed pLC(50), such results can offer useful theoretical references for future experimental works. (C) 2012 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2012.06.009
• 作为产物：
  描述：

  7-羟基香豆素 在 potassium carbonate 、 N,N-二甲基苯胺 作用下， 以 丙酮 为溶剂， 反应 10.0h， 生成 7-hydroxy-8-allylcoumarin
  参考文献：
  名称：

  Sesebrinic acid, a cinnamic acid derivative from Seseli sibiricum

  摘要：

  DOI：

  10.1016/s0031-9422(00)82295-5

文献信息

• Ecofriendly Iodination of Activated Aromatics and Coumarins Using Potassium Iodide and Ammonium Peroxodisulfate
  作者：Nemai Ganguly、Sujoy Barik、Sanjoy Dutta

  DOI：10.1055/s-0029-1218698

  日期：2010.5

  An environmentally benign protocol for the iodination of activated aromatics, such as phenols, anilines, and hydroxycoumarins, using inexpensive commercially available potassium iodide and ammonium peroxodisulfate (1:2.5 molar equivalents per mole of substrate) in aqueous methanol (MeOH-H2O, 6:1) at room temperature has been developed. The protocol provides for ortho-selective monoiodination as the

  使用廉价的市售碘化钾和过氧二硫酸铵（每摩尔底物1：2.5摩尔当量）在甲醇水溶液（MeOH-H 2 O中）进行碘化活化芳族化合物（如苯酚，苯胺和羟基香豆素）的环境友好方案6：1）已开发出室温。该方案提供邻位选择性单碘化作为主要产物而无需添加酸，并且它与许多常见的可氧化官能团如甲酰基，苄基CH，芳族胺和羟甲基兼容。在可接受的反应时间和排他的邻位条件下单碘化产物的收率良好至可接受尽管存在乙烯基电子富集的C3，但7-羟基香豆素的碘化是该方法的一些关键优势。 碘化-碘化钾-过二硫酸铵-活化芳烃-香豆素
• An efficient regioselective bromination protocol of activated coumarins using 2,4,4,6-tetrabromo-2,5-cyclohexadienone
  作者：Nemai C. Ganguly、Subhasis Nayek、Sumanta Chandra

  DOI：10.1139/cjc-2013-0230

  日期：2013.11

  2,4,4,6-Tetrabromo-2,5-cyclohexadienone mediated bromination of a wide assortment of activated coumarins in acetonitrile has been accomplished with high regioselectivity and good to excellent yields. The selectivity and efficiency of bromination were found to be markedly dependent on electronic factors, particularly degree of electron withdrawal from electron-releasing 7-oxygenated substituents to the C-3 position of the α-pyrone moiety by vinylogous resonance and the presence of nucleophilic additives such as water and tetra-n-butylammonium bromide in the reaction medium. The sole by-product of the reaction was converted back to the reagent by oxidation with KBr−KBrO₃, which was recycled three times without significant loss of efficiency.

  在乙腈中，2,4,4,6-四溴-2,5-环己二酮介导的对活化香豆素的溴化反应以高区域选择性和良好至优良的产率完成。发现溴化的选择性和效率在很大程度上取决于电子因素，特别是从电子给予的7-氧代取代基到α-吡喃酮部分的C-3位置的电子撤离程度，通过共轭共振和在反应介质中存在水和四正丁基溴化铵等亲核添加剂。反应的唯一副产物通过氧化与KBr−KBrO₃转化回试剂，试剂可以循环使用三次而不会显著损失效率。
• Synthesis of thio- and oxo-analogues of isopsoralen
  作者：Dino J Clarke、Ross S Robinson

  DOI：10.1016/s0040-4020(02)00161-8

  日期：2002.4

  A range of novel 5′-substituted 7-oxo and 7-thioisopsoralens were synthesized via a Claisen rearranged allyl aryl ether followed by reductive ozonolysis in the presence of a suitable solvent. In some cases dimethylthiocarbamoyl chloride was used as a protecting group and to introduce the thiol moiety.

  通过克莱森重排的烯丙基芳基醚，然后在合适的溶剂存在下进行还原性臭氧分解，合成了一系列新颖的5'-取代的7-氧代和7-硫代异补骨脂素。在某些情况下，二甲基硫代氨基甲酰氯用作保护基并引入硫醇部分。
• Prenylcoumarins in One or Two Steps by a Microwave-Promoted Tandem Claisen Rearrangement/Wittig Olefination/Cyclization Sequence
  作者：Christiane Schultze、Bernd Schmidt

  DOI：10.1021/acs.joc.8b00667

  日期：2018.5.4

  overcome by a two-step synthesis consisting of a microwave-promoted tandem allyl ether Claisen rearrangement/Wittig olefination and a subsequent olefin cross metathesis with 2-methyl-2-butene. The cross metathesis step proceeds with a high selectivity and yields exclusively the desired prenyl, rather than the alternative crotyl substituent. Several naturally occurring 8-prenylcoumarins that were previously

  发现在微波条件下由1，1-二甲基烯丙基化的水杨醛和稳定的内酯[（乙氧基羰基）亚甲基]三苯基磷烷一锅法合成8-戊烯香豆素的范围有限。该序列遭受前体的困难且有时低收率的合成的困扰，并且遭受微波辐射下竞争性的脱丙烯基作用。这种副反应特别是在富电子的芳烃中发生，该芳烃的芳烃在相邻位置具有两个或多个烷氧基，这是天然存在的8-异戊二烯香豆素的显着取代方式。一步合成法的两个局限性都可以通过两步合成法克服，该合成法是由微波促进的串联烯丙基醚克莱森重排/维蒂希烯化反应和随后的烯烃与2-甲基-2-丁烯的交叉复分解反应组成的。交叉复分解步骤以高选择性进行，并且仅产生所需的异戊二烯基，而不是替代的巴豆基取代基。沿这条路线已经以良好的总收率合成了几种以前无法获得的天然存在的8-异戊二烯香豆素。
• Ring-closing-metathesis-based synthesis of annellated coumarins from 8-allylcoumarins
  作者：Christiane Schultze、Bernd Schmidt

  DOI：10.3762/bjoc.14.278

  日期：——

  conveniently accessible through a microwave-promoted tandem Claisen rearrangement/Wittig olefination/cyclization sequence. They serve as a versatile platform for the annellation of five- to seven-membered rings using ring-closing olefin metathesis (RCM). Furano-, pyrano-, oxepino- and azepinocoumarins were synthesized from the same set of precursors using Ru-catalyzed double bond isomerizations and RCM in a defined

  可通过微波促进的串联克莱森重排/维蒂希烯化/环化序列方便地获得8-烯丙基香豆素。它们是使用闭环烯烃复分解（RCM）进行五元至七元环环合的通用平台。使用Ru催化的双键异构化和RCM按定义的顺序，从同一组前体中合成呋喃并，吡喃并，氧杂环丁烷和氮杂环庚烷香豆素。一类产品吡喃并[2,3-f]亚甲基-2,8-二酮无法通过丙烯酸酯的直接RCM获得，但可通过辅助串联催化RCM /烯丙基氧化序列从类似的烯丙基醚获得。