2,2-dimethylchromane-5,7-diol | 29373-14-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 2,2-dimethylchromane-5,7-diol
• 英文别名: 5,7-dihydroxy-2,2-dimethylchroman；2,2-dimethyl-3,4-dihydro-2H-chromene-5,7-diol；2,2-Dimethyl-5,7-chromanediol；2,2-dimethyl-3,4-dihydrochromene-5,7-diol
• CAS: 29373-14-6
• 化学式: C₁₁H₁₄O₃
• 分子量: 194.23
• InChiKey: QLZWHJYEWYUYLZ-UHFFFAOYSA-N

物化性质

• 熔点：
  162-163 °C
• 沸点：
  352.0±22.0 °C(Predicted)
• 密度：
  1.194±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  14
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  49.7
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2,2-dimethylchromane-5,7-diol 在 甲酸 、 tris(dibenzylideneacetone)dipalladium (0) 、 2,3-二氯-5,6-二氰基-1,4-苯醌 作用下， 以 苯 为溶剂， 反应 20.0h， 生成 黄木亭
  参考文献：
  名称：

  Atom Economy. Palladium-Catalyzed Formation of Coumarins by Addition of Phenols and Alkynoates via a Net C−H Insertion

  摘要：

  A strategy to achieve ortho substitution of phenols initiated by an ortho-palladation to create coumarins was examined. Indeed, treatment of alkynoates with electron-rich phenols in the presence of a palladium catalyst and an acid does generate coumarins. The scope of the reaction with respect to the phenol and the alkynoates is defined. With unsymmetrical aromatic substrates, generally good regioselectivity that reflects the HOMO coefficients can be observed. In the course of these studies, numerous important naturally occurring coumarins have been synthesized, including fraxinol methyl ether, ayapin, herniarin, xanthoxyletin, and alloxanthoxyletin. The fact that a Pd(0) is the precatalyst rather than a Pd(+2) species and that an acid that reduces Pd(+2) salts, formic acid, functions better than other carboxylic acids raises doubts about the initial working hypothesis. A novel mechanism involving a palladium phenoxide formed from a hydridopalladium carboxylate and phenol is invoked to rationalize the results.

  DOI：

  10.1021/ja0286573
• 作为产物：
  描述：

  3,3-二甲基丙烯酸 在 盐酸 、 zinc(II) chloride 、 锌 、 三氯氧磷 作用下， 以 甲醇 为溶剂， 反应 18.0h， 生成 2,2-dimethylchromane-5,7-diol
  参考文献：
  名称：

  Atom Economy. Palladium-Catalyzed Formation of Coumarins by Addition of Phenols and Alkynoates via a Net C−H Insertion

  摘要：

  A strategy to achieve ortho substitution of phenols initiated by an ortho-palladation to create coumarins was examined. Indeed, treatment of alkynoates with electron-rich phenols in the presence of a palladium catalyst and an acid does generate coumarins. The scope of the reaction with respect to the phenol and the alkynoates is defined. With unsymmetrical aromatic substrates, generally good regioselectivity that reflects the HOMO coefficients can be observed. In the course of these studies, numerous important naturally occurring coumarins have been synthesized, including fraxinol methyl ether, ayapin, herniarin, xanthoxyletin, and alloxanthoxyletin. The fact that a Pd(0) is the precatalyst rather than a Pd(+2) species and that an acid that reduces Pd(+2) salts, formic acid, functions better than other carboxylic acids raises doubts about the initial working hypothesis. A novel mechanism involving a palladium phenoxide formed from a hydridopalladium carboxylate and phenol is invoked to rationalize the results.

  DOI：

  10.1021/ja0286573

文献信息

• DESIGN, SYNTHESIS AND FUNCTIONAL CHARACTERIZATION OF ROTTLERIN ANALOGS
  申请人：KANTHASAMY ANUMANTHA G.

  公开号：US20110112182A1

  公开（公告）日：2011-05-12

  A method of synthesizing rottlerin analogs is described. The synthesis methods described are the first known method of synthesizing rottlerin analogs from commercially-available materials to produce cost effective analogs. Rottlerin analog structures made by the synthesis methods and methods of use for treating a neurological or inflammatory response mediated by protein kinase C (PKC) are further described.

  描述了一种合成罗特林类似物的方法。所描述的合成方法是从商业可获得的材料中合成罗特林类似物的首个已知方法，以生产具有成本效益的类似物。通过这些合成方法制备的罗特林类似物结构以及用于治疗由蛋白激酶C（PKC）介导的神经或炎症反应的方法也进一步描述了。
• A Catalyst-Free One-Pot Construction of Skeletons of 5-Methoxyseselin and Alloxanthoxyletin in Water
  作者：Jin-Li Cao、Su-Li Shen、Peng Yang、Jin Qu

  DOI：10.1021/ol401581p

  日期：2013.8.2

  In refluxing water and without an additional catalyst, electron-rich phenols could react with alkynoic acids or alkynoates to provide coumarin structures. The skeletons of two natural pyranocoumarins, 5-methoxyseselin and alloxanthoxyletin, could be constructed (total yield up to 76%) in an aqueous multicomponent reaction in which isoprenyl acetate, propiolic acid, and phloroglucinol were simply mixed

  在回流水中且没有其他催化剂的情况下，富含电子的酚可能与炔酸或炔酸反应生成香豆素结构。可以在水性多组分反应中构建两种天然吡喃香豆素的骨架，即5-甲氧基水杨素和别氧蒽氧基letletanthoxyletin（总收率高达76％），其中将异戊二烯乙酸酯，丙酸和间苯三酚简单地混合并在水中回流。
• Synthesis of the mangostins
  作者：Hiok-Huang Lee

  DOI：10.1039/p19810003205

  日期：——

  Acylation of 5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran (10c) with 6,8-dimethoxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-5-carboxylic acid (9b) in the presence of trifluoroacetic anhydride gave 5,7-dibenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1- benzopyran-8-yl, 3,4-dihydro-6,8-dimethoxy-2,2-dimethyl-2H-1-benzopyran-5-yl ketone (8c), which was converted, in three steps, into dimethyl-1-isonormangostin

  5,7-双苄氧基-3,4-二氢-2,2-二甲基-2 H -1-苯并吡喃（10c）与6,8-二甲氧基-3,4-二氢-2,2-二甲基-2 H酰化在三氟乙酸酐存在下，-1-苯并吡喃-5-羧酸（9b）得到5,7-二苄氧基-3,4-二氢-2,2-二甲基-2 H -1-苯并吡喃-8-基，3， 4-二氢-6,8-二甲氧基-2,2-二甲基-2 H通过三个步骤将-1-苯并吡喃-5-基酮（8c）转化为二甲基-1-异黄烷醇（7）。（7）与三氯化硼的反应导致两个末端吡喃环的裂解，得到1,7-双-（3-氯-3-甲基丁基）-2,8-二羟基-3,6-二甲氧基黄原-9-一（6a）。（6a）的选择性甲基化得到已知的1，7-双-（3-氯-3-甲基丁基）-8-羟基-2,3,6-三甲氧基黄嘌呤-9-（6b）。鉴于（6b）的甲氧羰基氧基衍生物（6c）用氯化锂在二甲基甲酰胺中进行脱氯化氢得到的混合物是二甲基mangostin（1d）和1
• Magnesium dicarboxylates promote the prenylation of phenolics that is extended to the total synthesis of icaritin
  作者：Jichao Zhang、Wei Xiong、Yongju Wen、Xuewen Fu、Xiaoxia Lu、Guolin Zhang、Chun Wang

  DOI：10.1039/d1ob02228h

  日期：——

  study of the prenylation provided evidence for the nucleophilic addition/substitution of the phenolic substrate to the alkyl halide in the presence of the magnesium dicarboxylates. The proto application of this method in the total synthesis of icaritin through the prenylation of 2,4,6-trihydroxyacetophenone, followed by the reaction with benzaldehyde to afford the flavonol, was successful, with a total

  开发了由二羧酸镁促进的酚类底物的异戊烯化。对该范围的调查表明，具有给电子基团的底物比具有吸电子基团的底物产生更好的产率。尽管所有底物在 MeCN 中的转化率都高于 DMF，但 DMF 仍然是多酚底物的有利溶剂，因为 MeCN 会导致生成环化副产物 ( 6 ) 并降低3的收率。对于那些对位未占据的底物，邻位与对位异戊二烯化（3'与3'' ）的区域选择性也与溶剂有关。DMF主要生产邻位-产品，但转化率低。另一方面，MeCN 主要产生对位产物，以及次要的邻位产物。异戊二烯化的机理研究为在二羧酸镁存在下酚底物亲核加成/取代到卤代烷提供了证据。该方法在2,4,6-三羟基苯乙酮异戊烯化后与苯甲醛反应得到黄酮醇的全合成淫羊藿苷中的初步应用是成功的，总收率为33%。
• Synthesis and anti-inflammatory activity evaluation of novel chroman derivatives
  作者：Akanksha Matta、Ajendra K. Sharma、Shilpi Tomar、Pei Cao、Sandeep Kumar、Sakshi Balwani、Balaram Ghosh、Ashok K. Prasad、Erik V. Van der Eycken、Anthony L. DePass、Jesper Wengel、Virinder S. Parmar、Christophe Len、Brajendra K. Singh

  DOI：10.1039/d0nj02125c

  日期：——

  In an effort to develop potent anti-inflammatory agents, a series of novel chroman derivatives including acyclic amidochromans, chromanyl esters and chromanyl acrylates have been designed, synthesized and fully characterized. These chroman analogues were screened for their anti-inflammatory activities through inhibition of the TNF-α-induced ICAM-1 expression on human endothelial cells. A structure–activity

  为了开发有效的抗炎剂，已经设计，合成并充分表征了一系列新的苯并二氢吡喃衍生物，包括无环酰胺基苯并二氢吡喃，苯并二氢吡喃酯和苯并二氢吡喃苯甲酸酯。通过抑制人内皮细胞上TNF-α诱导的ICAM-1表达，筛选了这些苯并吡喃类似物的抗炎活性。还建立了结构与活性的关系，并且发现对于羧基苯并二氢吡喃和酰胺基苯并二氢吡喃，酰胺部分的链长，侧链的支化以及苯环上取代基的存在对它们的抑制活性，而在丙烯酸苯丙酯中，甲氧基的数量，它们在苯环上的相对位置以及α中官能团的存在，β-不饱和酯部分对它们的活性起关键作用。复合发现14（N-己基-7-羟基-2,2-二甲基苯并吡喃-6-羧酰胺）是抑制内皮细胞上TNF-α诱导的ICAM-1表达的最有效化合物。