橡精 | 480-15-9

• 物质功能分类: 生物化工 - 提取物 - 植物提取物
• 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: 橡精
• 英文名称: datiscetin
• 英文别名: 3,5,7,2'-tetrahydroxyflavone；3,5,7-trihydroxy-2-(2-hydroxyphenyl)chromen-4-one
• CAS: 480-15-9
• 化学式: C₁₅H₁₀O₆
• mdl: MFCD00017307
• 分子量: 286.241
• InChiKey: WCNLFPKXBGWWDS-UHFFFAOYSA-N

物化性质

• 熔点：
  266-278°C
• 沸点：
  348.61°C (rough estimate)
• 密度：
  1.2981 (rough estimate)
• LogP：
  3.429 (est)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  21
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  107
• 氢给体数：
  4
• 氢受体数：
  6

ADMET

代谢

酸浆素已知的人体代谢物包括：(2S,3S,4S,5R)-6-[5,7-二羟基-2-(2-羟基苯基)-4-氧代色烯-3-基]氧基-3,4,5-三羟基氧杂环己烷-2-羧酸。

Datiscetin has known human metabolites that include (2S,3S,4S,5R)-6-[5,7-dihydroxy-2-(2-hydroxyphenyl)-4-oxochromen-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid.

来源:NORMAN Suspect List Exchange

安全信息

• 安全说明：
  S26
• 危险类别码：
  R36/37/38

反应信息

• 作为反应物：
  描述：

  橡精 在 加尔万氧基自由基 作用下， 以 乙醇 为溶剂， 生成
  参考文献：
  名称：

  Kinetic and Stoichiometric Assessment of the Antioxidant Activity of Flavonoids by Electron Spin Resonance Spectroscopy

  摘要：

  dThere is current interest in the use of naturally occurring flavonoids as antioxidants for the preservation of foods and the prevention of diseases such as atherosclerosis and cancers. To establish the molecular characteristics required for maximum antioxidant activity, electron spin resonance (ESR) spectroscopy has been used to determine the stoichiometry and kinetics of the hydrogen-donating ability of 15 flavonoids and D-alpha-tocopherol to galvinoxyl, a resonance-stabilized, sterically protected aryloxyl radical. The second-order reaction rates, which will be governed by O-H bond dissociation energies, were myricetin > morin > quercetin > fisetin similar to catechin > kaempferol similar to luteolin > rutin > D-alpha-tocopherol > taxifolin > tamarixetin > myricetin 3',4',5'-trimethyl ether > datiscetin > galangin > hesperitin similar to apigenin. Reactivity is highly dependant on the configuration of OH groups on the flavonoid B and C rings, there being little contribution from the A ring to antioxidant effectiveness. Highest reaction rates and stoichiometries were observed with flavonols capable of being oxidized to orthoquinones or extended paraquinones. However, rates and stoichiometries did not always correlate and the data suggest that kinetic factors may be of greater importance within a biological context.

  DOI：

  10.1021/jf025922v
• 作为产物：
  描述：

  datiscanin 在 盐酸 作用下， 反应 1.0h， 生成 橡精
  参考文献：
  名称：

  Datisca 大麻的黄酮类化合物。V. Datiscanin — 一种新的 datiscetin 糖苷

  摘要：

  从Datisca cannabina L.的草本植物中分离得到了新的黄酮苷datiscanin，并建立了2′,3,5,7-四羟基黄酮3-0-β-D-吡喃葡萄糖苷的结构。继 datiscetin（datiscetin 3-rutinoside）之后，这是自然界中发现的第二种 datiscetin 糖苷。

  DOI：

  10.1007/bf00577183

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。
• METHOD OF IMPROVING STABILITY OF SWEET ENHANCER AND COMPOSITION CONTAINING STABILIZED SWEET ENHANCER
  申请人：TACHDJIAN Catherine

  公开号：US20120041078A1

  公开（公告）日：2012-02-16

  The present invention includes methods of stabilizing one or more sweet enhancers when they are exposed to a light source as well as liquid compositions containing one or more sweet enhancers and one or more photostabilizers.

  本发明包括在甜味增强剂暴露于光源时稳定一个或多个甜味增强剂的方法，以及包含一个或多个甜味增强剂和一个或多个光稳定剂的液体组合物。
• Controlled Release of Nitric Oxide And Drugs From Functionalized Macromers And Oligomers
  申请人：Bezwada Rao S.

  公开号：US20120035259A1

  公开（公告）日：2012-02-09

  The present invention provides NO and, optionally, drug releasing macromers and oligomers wherein the drug molecule and NO releasing moiety are linked an absorbable macromer or oligomeric chain susceptible to hydrolytic degradation and wherein the macromer or oligomer comprises of repeat units derived from safe and biocompatible molecules such as glycolic acid, lactic acid, caprolactone and p-dioxanone. Furthermore, the present invention relates to controlled release of nitric oxide (NO) and/or drug molecule from a NO and drug releasing macromer or oligomer. Moreover, the present invention also relates to medical devices, medical device coatings and therapeutic formulations comprising of nitric oxide and drug releasing macromers and oligomers of the present invention.

  本发明提供了一氧化氮(NO)和可选的药物释放的大分子和寡聚物，其中药物分子和一氧化氮释放部分通过可吸收的大分子或可水解降解的寡聚物链连接，并且大分子或寡聚物由来自诸如乙醇酸、乳酸、己内酰胺和对二恶烷等安全且生物相容的分子的重复单元组成。此外，本发明还涉及从一氧化氮和/或药物分子释放的大分子或寡聚物控制释放一氧化氮(NO)。此外，本发明还涉及包含本发明的一氧化氮和药物释放大分子和寡聚物的医疗器械、医疗器械涂层和治疗方法。
• ABSORBABLE BRANCHED POLYESTERS AND POLYURETHANES
  申请人：Bezwada Biomedical, LLC

  公开号：US20140142199A1

  公开（公告）日：2014-05-22

  The present invention relates to the discovery of a new class of hydrolysable isocyanates, hydrolysable branched polyols and branched absorbable polyesters and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, stents, highly porous foam, reticulated foam, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers can have a controlled hydrolytic degradation profile.

  本发明涉及一种新型可水解异氰酸酯、可水解支链多元醇及其制备的支链可吸收聚酯和聚氨酯的发现。由此得到的可吸收聚合物可用于药物输送、支架、高孔隙率泡沫、网状泡沫、组织工程、组织粘合剂、防止粘连、骨蜡制剂、医疗设备涂层、表面改性剂以及其他可植入医疗设备。此外，这些可吸收聚合物可以具有受控的水解降解特性。
• Functionalized drugs and polymers derived therefrom
  申请人：Bezwada S. Rao

  公开号：US20060172983A1

  公开（公告）日：2006-08-03

  Compounds selected from: where DRUG-OH, DRUG-COOH and DRUG-NH 2 are biologically active compounds; each X is independently selected from —CH 2 COO— (glycolic acid moiety), —CH(CH 3 )COO— (lactic acid moiety), —CH 2 CH 2 OCH 2 COO— (dioxanone moiety), —CH 2 CH 2 CH 2 CH 2 CH 2 COO— (caprolactone moiety), —(CH 2 ) y COO—, where y is 2-4 or 6-24 and —(CH 2 CH 2 O) z CH 2 COO—, where z is 2-24; each Y is independently selected from —COCH 2 O— (glycolic ester moiety), —COCH(CH 3 )O— (lactic ester moiety), —COCH 2 OCH 2 CH 2 O— (dioxanone ester moiety), —COCH 2 CH 2 CH 2 CH 2 CH 2 O— (caprolactone ester moiety), —CO(CH 2 ) m O—, where m is 2-4 or 6-24 and —COCH 2 O(CH 2 CH 2 O) n — where n is between 2-24; R′ is hydrogen, benzyl or an alkyl group, the alkyl group being either straight-chained or branched; and p is 1-6. Multi-functional compounds and drug dimers, oligomers and polymers are also disclosed.

  从中选择的化合物：其中DRUG-OH，DRUG-COOH和DRUG-NH2是生物活性化合物；每个X独立地从—CH2COO—（乙二酸基团），—CH(CH3)COO—（乳酸基团），—CH2CH2OCH2COO—（二氧杂环己酮基团），—CH2CH2CH2CH2CH2COO—（己内酯基团），—(CH2)yCOO—中选择，其中y为2-4或6-24和—(CH2CH2O)zCH2COO—，其中z为2-24；每个Y独立地从—COCH2O—（乙二酸酯基团），—COCH(CH3)O—（乳酸酯基团），—COCH2OCH2CH2O—（二氧杂环己酮酯基团），—COCH2CH2CH2CH2CH2O—（己内酯酯基团），—CO(CH2)mO—，其中m为2-4或6-24和—COCH2O(CH2CH2O)n—，其中n为2-24；R′为氢，苄基或烷基，烷基可以是直链或支链；p为1-6。还披露了多功能化合物和药物二聚体、寡聚体和聚合物。