3-羟基-5-甲氧基黄酮 | 6665-81-2

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 中文名称: 3-羟基-5-甲氧基黄酮
• 英文名称: 3-Hydroxy-5-methoxyflavon
• 英文别名: 3-Hydroxy-5-methoxyflavone；3-hydroxy-5-methoxy-2-phenyl-4H-chromen-4-one；3-hydroxy-5-methoxy-2-phenylchromen-4-one
• CAS: 6665-81-2
• 化学式: C₁₆H₁₂O₄
• 分子量: 268.269
• InChiKey: WHLQVYWQNZFUPW-UHFFFAOYSA-N

物化性质

• 熔点：
  173-176°C
• 沸点：
  448.0±45.0 °C(Predicted)
• 密度：
  1.353±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  20
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  55.8
• 氢给体数：
  1
• 氢受体数：
  4

ADMET

代谢

3-羟基-5-甲氧基黄酮已知的人类代谢物包括(2S,3S,4S,5R)-3,4,5-三羟基-6-(5-甲氧基-4-氧代-2-苯基色烯-3-基)氧杂环丁烷-2-羧酸。

3-Hydroxy-5-methoxyflavone has known human metabolites that include (2S,3S,4S,5R)-3,4,5-trihydroxy-6-(5-methoxy-4-oxo-2-phenylchromen-3-yl)oxyoxane-2-carboxylic acid.

来源:NORMAN Suspect List Exchange

安全信息

• 海关编码：
  2914509090

反应信息

• 作为反应物：
  描述：

  3-羟基-5-甲氧基黄酮 在 caesium carbonate 、 platinum(II) chloride 作用下， 以 1,2-二氯乙烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 12.0h， 生成 4-methoxy-2-(3-methylfuran-2-yl)-2-phenylbenzofuran-3(2H)-one
  参考文献：
  名称：

  Metal-Catalyzed Cascade Rearrangements of 3-Alkynyl Flavone Ethers

  摘要：

  Metal-mediated rearrangements of 3-alkynyl flavone ethers are reported. The overall process involves 5-endo enyne cyclization to a platinum. containing spiro-oxocarbenium intermediate which may be trapped with methanol to produce spirodihydrofurans or further rearranged to afford either allenyl chromanediones or benzofuranones.

  DOI：

  10.1021/ol400631b
• 作为产物：
  描述：

  5-甲氧基黄烷酮 在 盐酸 、 亚硝酸正戊酯 、 乙醇 作用下， 生成 3-羟基-5-甲氧基黄酮
  参考文献：
  名称：

  Seshadri; Venkateswarlu, Proceedings - Indian Academy of Sciences, Section A, 1947, # 26, p. 189,191

  摘要：

  DOI：

文献信息

• Accurate Prediction of Glucuronidation of Structurally Diverse Phenolics by Human UGT1A9 Using Combined Experimental and In Silico Approaches
  作者：Baojian Wu、Xiaoqiang Wang、Shuxing Zhang、Ming Hu

  DOI：10.1007/s11095-012-0666-z

  日期：2012.6

  Catalytic selectivity of human UGT1A9, an important membrane-bound enzyme catalyzing glucuronidation of xenobiotics, was determined experimentally using 145 phenolics and analyzed by 3D-QSAR methods. Catalytic efficiency of UGT1A9 was determined by kinetic profiling. Quantitative structure activity relationships were analyzed using CoMFA and CoMSIA techniques. Molecular alignment of substrate structures was made by superimposing the glucuronidation site and its adjacent aromatic ring to achieve maximal steric overlap. For a substrate with multiple active glucuronidation sites, each site was considered a separate substrate. 3D-QSAR analyses produced statistically reliable models with good predictive power (CoMFA: q2 = 0.548, r2 = 0.949, r pred 2  = 0.775; CoMSIA: q2 = 0.579, r2 = 0.876, r pred 2  = 0.700). Contour coefficient maps were applied to elucidate structural features among substrates that are responsible for selectivity differences. Contour coefficient maps were overlaid in the catalytic pocket of a homology model of UGT1A9, enabling identification of the UGT1A9 catalytic pocket with a high degree of confidence. CoMFA/CoMSIA models can predict substrate selectivity and in vitro clearance of UGT1A9. Our findings also provide a possible molecular basis for understanding UGT1A9 functions and substrate selectivity.

  通过实验使用145种酚类化合物，并通过3D-QSAR方法分析，确定了人UGT1A9的催化选择性。UGT1A9是一种重要的膜结合酶，催化外源性物质的葡糖醛酸化反应。通过动力学分析确定了UGT1A9的催化效率。使用CoMFA和CoMSIA技术分析了定量结构活性关系。通过将葡糖醛酸化位点及其相邻的芳香环重叠，实现了底物结构的最大立体重叠。对于具有多个活性葡糖醛酸化位点的底物，每个位点被视为单独的底物。3D-QSAR分析产生了统计上可靠的模型，具有良好的预测能力（CoMFA：q2=0.548，r2=0.949，r pred 2=0.775；CoMSIA：q2=0.579，r2=0.876，r pred 2=0.700）。通过轮廓系数图阐明了底物中负责选择性差异的结构特征。将轮廓系数图叠加在UGT1A9的同源模型的催化口袋中，能够高度自信地识别UGT1A9的催化口袋。CoMFA/CoMSIA模型可以预测底物的选择性和UGT1A9的体外清除率。我们的发现还提供了理解UGT1A9功能和底物选择性的可能分子基础。
• Discovery of a Prenylated Flavonol Derivative as a Pin1 Inhibitor to Suppress Hepatocellular Carcinoma by Modulating MicroRNA Biogenesis
  作者：Yuanyuan Zheng、Wenchen Pu、Jiao Li、Xianyan Shen、Qiang Zhou、Xin Fan、Sheng-Yong Yang、Yamei Yu、Qiang Chen、Chun Wang、Xin Wu、Yong Peng

  DOI：10.1002/asia.201801461

  日期：2019.1.4

  isomerase Pin1 plays a crucial role in the development of human cancers. Recently, we have disclosed that Pin1 regulates the biogenesis of miRNA, which is aberrantly expressed in HCC and promotes HCC progression, indicating the therapeutic role of Pin1 in HCC therapy. Here, 7‐(benzyloxy)‐3,5‐dihydroxy‐2‐(4‐methoxyphenyl)‐8‐(3‐methylbut‐2‐en‐1‐yl)‐4H‐chromen‐4‐one (AF‐39) was identified as a novel Pin1

  肽脯氨酰顺-反异构酶中Pin1在人类癌症的发展至关重要的作用。最近，我们披露了Pin1调节miRNA的生物发生，miRNA在HCC中异常表达并促进HCC进展，表明Pin1在HCC治疗中的治疗作用。在此，7-（苄氧基）-3,5-二羟基-2-（4-甲氧基苯基）-8-（3-甲基丁-2-烯-1-基）-4H-铬-4--1（AF-39）被鉴定为新型的Pin1抑制剂。生化试验表明，AF-39有效抑制中Pin1活性，其IC 50的1.008μ值米，并且还显示中肽基脯氨酰异构酶对中Pin1高选择性。此外，AF‐39以剂量和时间依赖性方式显着抑制HCC细胞的细胞增殖。从机制上讲，AF-39调节XPO5的亚细胞分布并增加HCC细胞中miRNA的生物发生。这项工作为HCC治疗提供了有希望的先导化合物，突出了基于miRNA的疗法对人类癌症的治疗潜力。
• Three-Dimensional Quantitative Structure-Activity Relationship Studies on UGT1A9-Mediated 3-O-Glucuronidation of Natural Flavonols Using a Pharmacophore-Based Comparative Molecular Field Analysis Model
  作者：Baojian Wu、John Kenneth Morrow、Rashim Singh、Shuxing Zhang、Ming Hu

  DOI：10.1124/jpet.110.175356

  日期：2011.2

  Glucuronidation is often recognized as one of the rate-determining factors that limit the bioavailability of flavonols. Hence, design and synthesis of more bioavailable flavonols would benefit from the establishment of predictive models of glucuronidation using kinetic parameters [e.g., K m, V max, intrinsic clearance (CLint) = V max/ K m] derived for flavonols. This article aims to construct position (3-OH)-specific comparative molecular field analysis (CoMFA) models to describe UDP-glucuronosyltransferase (UGT) 1A9-mediated glucuronidation of flavonols, which can be used to design poor UGT1A9 substrates. The kinetics of recombinant UGT1A9-mediated 3-O-glucuronidation of 30 flavonols was characterized, and kinetic parameters ( K m, V max, CLint) were obtained. The observed K m, V max, and CLint values of 3-O-glucuronidation ranged from 0.04 to 0.68 μM, 0.04 to 12.95 nmol/mg/min, and 0.06 to 109.60 ml/mg/min, respectively. To model UGT1A9-mediated glucuronidation, 30 flavonols were split into the training (23 compounds) and test (7 compounds) sets. These flavonols were then aligned by mapping the flavonols to specific common feature pharmacophores, which were used to construct CoMFA models of V max and CLint, respectively. The derived CoMFA models possessed good internal and external consistency and showed statistical significance and substantive predictive abilities ( V max model: q 2 = 0.738, r 2 = 0.976, r pred2 = 0.735; CLint model: q 2 = 0.561, r 2 = 0.938, rpred2 = 0.630). The contour maps derived from CoMFA modeling clearly indicate structural characteristics associated with rapid or slow 3-O-glucuronidation. In conclusion, the approach of coupling CoMFA analysis with a pharmacophore-based structural alignment is viable for constructing a predictive model for regiospecific glucuronidation rates of flavonols by UGT1A9.

  葡糖醛酸化通常被认为是限制类黄酮醇生物利用度的决定速率的因素之一。因此，利用类黄酮醇的动力学参数（如 Km、Vmax、内在清除率（CLint）= Vmax/ Km）建立葡糖醛酸化的预测模型，将有利于设计合成更多生物可利用的类黄酮醇。本文旨在构建针对3-OH位点的特定比较分子场分析（CoMFA）模型，描述UDP-葡糖醛酸基转移酶（UGT）1A9介导的类黄酮醇葡糖醛酸化过程，该模型可用于设计不佳的UGT1A9底物。我们对重组UGT1A9介导的30种类黄酮醇的3-O-葡糖醛酸化动力学进行了表征，并获得了动力学参数（Km、Vmax、CLint）。观察到的3-O-葡糖醛酸化Km、Vmax和CLint值分别在0.04至0.68 μM、0.04至12.95 nmol/mg/min和0.06至109.60 ml/mg/min之间。为了模拟UGT1A9介导的葡糖醛酸化，我们将30种类黄酮醇分为训练集（23个化合物）和测试集（7个化合物）。然后通过将类黄酮醇映射到特定的共同特征药效团来对齐，从而构建了Vmax和CLint的CoMFA模型。得到的CoMFA模型具有良好的内在和外在一致性，显示出统计学意义和实质性的预测能力（Vmax模型：q2 = 0.738，r2 = 0.976，rpred2 = 0.735；CLint模型：q2 = 0.561，r2 = 0.938，rpred2 = 0.630）。从CoMFA建模得到的轮廓图清晰地表明了与快速或慢速3-O-葡糖醛酸化相关的结构特征。总之，结合CoMFA分析和基于药效团的结构对齐方法是可行的，可以构建用于UGT1A9介导的类黄酮醇区域特异性葡糖醛酸化速率的预测模型。
• Synthesis of Flavonols via Pyrrolidine Catalysis: Origins of the Selectivity for Flavonol versus Aurone
  作者：Wei Xiong、Xiaohong Wang、Xianyan Shen、Cuifang Hu、Xin Wang、Fei Wang、Guolin Zhang、Chun Wang

  DOI：10.1021/acs.joc.0c01869

  日期：2020.10.16

  method for flavonol from 2′-hydroxyl acetophenone and benzaldehyde promoted by pyrrolidine under an aerobic condition in water is established. This protocol was supported by efficient synthesis of 44 common examples and three natural products. The α, β-unsaturated iminium ion (enimine ion E) was proved to be the key intermediate in the reaction. H218O and 18O2 isotope tracking experiments demonstrated

  建立了一种在水中好氧条件下由吡咯烷促进的2'-羟基苯乙酮和苯甲醛合成黄酮醇的新方法。该协议得到44个常见实例和三种天然产物的有效合成的支持。事实证明，α，β-不饱和亚胺离子（亚胺离子E）是反应的关键中间体。H 2 18 O和18 O 2同位素跟踪实验表明，水和好氧气氛对于确保转化都必不可少。黄酮醇或金酮的选择性源自溶剂触发的中间体，该中间体由分离的亚胺的紫外可见光谱确定。酚亚胺EA在水中占主导地位，酮烯胺中间体EB在乙腈中盛行。在环化和[2 + 2]氧化的关键步骤之后，在吡咯烷和氧的存在下，EA通过EI（两性离子样的酚氧基亚胺离子）通过EI生成黄酮醇。EB通过路径II进行，这是由EB与吡咯烷和氧气共同光解而引发的自由基过程，从而生成金酮。初步的机械研究报道。
• Enantioselective Synthesis of 3,4-Chromanediones via Asymmetric Rearrangement of 3-Allyloxyflavones
  作者：Jean-Charles Marié、Yuan Xiong、Geanna K. Min、Adam R. Yeager、Tohru Taniguchi、Nina Berova、Scott E. Schaus、John A. Porco

  DOI：10.1021/jo100889c

  日期：2010.7.2

  Asymmetric scandium(III)-catalyzed rearrangement of 3-allyloxyflavones was utilized to prepare chiral, nonracemic 3,4-chromanediones in high yields and enantioselectivities. These synthetic intermediates have been further elaborated to novel heterocyclic frameworks including angular pyrazines and dihydropyrazines. The absolute configuration of rearrangement products was initially determined by a nonempirical

  利用不对称钪 (III) 催化的 3-烯丙氧基黄酮重排以高产率和对映选择性制备手性、非外消旋 3,4-色二酮。这些合成中间体已被进一步细化为新型杂环骨架，包括角吡嗪和二氢吡嗪。重排产物的绝对构型最初是通过圆二色性 (CD) 的非经验分析使用时间相关密度泛函理论 (TDDFT) 计算确定的，并通过腙衍生物的 X 射线晶体学验证。该机制的初步研究支持可能通过苯并吡喃中间体进行的分子内重排途径。