(2S,3S,4S,5R,6R)-6-((5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-4-oxo-4H-chromen-3-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: (2S,3S,4S,5R,6R)-6-((5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-4-oxo-4H-chromen-3-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid
• 英文别名: isorhamnetin-3-glucuronide
• 化学式: C₂₂H₂₀O₁₃
• 分子量: 492.393
• InChiKey: VVZWHOMBDMMRSC-KVTNQMLVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.14
• 重原子数：
  35.0
• 可旋转键数：
  5.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  216.58
• 氢给体数：
  7.0
• 氢受体数：
  12.0

反应信息

• 作为产物：
  描述：

  [5,7-二乙酰氧基-2-(3,4-二乙酰氧基苯基)-4-氧代苯并吡喃-3-基]乙酸酯 在 20% palladium hydroxide-activated charcoal 、 potassium carbonate 、 potassium iodide 、 silver(l) oxide 作用下， 以 吡啶 、 甲醇 、 乙醇 、 丙酮 、 mineral oil 、 环己烯 为溶剂， 反应 136.0h， 生成 (2S,3S,4S,5R,6R)-6-((5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-4-oxo-4H-chromen-3-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid
  参考文献：
  名称：

  甲基化槲皮素衍生物的葡萄糖醛酸化：化学和生化方法

  摘要：

  源自葡萄的植物补充剂在动物模型系统中具有改善神经系统疾病（包括认知障碍）的功能。喂食葡萄提取物的大鼠大脑中会积聚 3′- O - 甲基 - 槲皮素 - 3 - O -β - d -葡萄糖醛酸苷 ( 3 )，表明3是一种潜在的治疗剂。开发3及相关4′ - O-甲基-槲皮素-7- O -β- d-葡萄糖醛酸苷( 4 )、3- O-甲基-槲皮素-3′- O -β- d-的合成方法葡萄糖醛酸苷 ( 5 ) 和 4′- O -甲基-槲皮素-3′- O -β- d -葡萄糖醛酸苷 ( 6 ) 在大脑中不存在，我们评估了酶法半合成和全化学合成方法。哺乳动物UDP-葡萄糖醛酸基转移酶的生物催化从4'- O-甲基槲皮素产生多种葡萄糖醛酸化产物，但不具有成本效益。另一方面，化学合成方法提供了良好的结果；3、5和6分六步合成，总产率分别为12%、18%和30%，而4分五步合成，总产率34%。还提出了在槲皮素葡萄

  DOI：

  10.1021/acs.jafc.0c04500

文献信息

• Flavonol Glycosides of Sea Buckthorn (Hippophaë rhamnoides ssp. <i>sinensis</i>) and Lingonberry (Vaccinium vitis-idaea) Are Bioavailable in Humans and Monoglucuronidated for Excretion
  作者：Henna-Maria Lehtonen、Outi Lehtinen、Jukka-Pekka Suomela、Matti Viitanen、Heikki Kallio

  DOI：10.1021/jf9029942

  日期：2010.1.13

  Glucuronidation and excretion of sea buckthorn and lingonberry flavonols were investigated in a postprandial trial by analyzing the intact forms of flavonol glycosides as well as glucuronides in plasma, urine, and feces. Four study subjects consumed sea buckthorn (study day 1) and lingonberry (study day 2) breakfasts, and blood, urine, and fecal samples were collected for 8, 24, and 48 h, respectively. Both glycosides and glucuronides of the flavonol quercetin as well as kaempferol glucuronides were detected in urine and plasma samples after the consumption of lingonberries; 14% of flavonols in urine were glycosides, and 86% were glucuronidated forms (wt %). After the consumption of sea buckthorn, 5% of flavonols excreted in urine were detected intact, and 95% as the glucuronides (wt %). Solely glucuronides of flavonols isorhamnetin and quercetin were found in plasma after the consumption of sea buckthorn berries. Only glycosides were detected in the feces after each berry trial. Flavonol glycosides and glucuronides remained in blood and urine quite long, and the peak concentrations appeared slightly later than previously described. The berries seemed to serve as a good flavonol supply, providing steady flavonol input for the body for a relatively long time.
• Glucuronidation of Methylated Quercetin Derivatives: Chemical and Biochemical Approaches
  作者：Maite L. Docampo-Palacios、Anislay Alvarez-Hernández、Olubu Adiji、Daylin Gamiotea-Turro、Alexander B. Valerino-Diaz、Luís P. Viegas、Ikenna E. Ndukwe、Ângelo de Fátima、Christian Heiss、Parastoo Azadi、Giulio M. Pasinetti、Richard A. Dixon

  DOI：10.1021/acs.jafc.0c04500

  日期：2020.12.16

  Botanical supplements derived from grapes are functional in animal model systems for the amelioration of neurological conditions, including cognitive impairment. Rats fed with grape extracts accumulate 3′-O-methyl-quercetin-3-O-β-d-glucuronide (3) in their brains, suggesting 3 as a potential therapeutic agent. To develop methods for the synthesis of 3 and the related 4′-O-methyl-quercetin-7-O-β-d-glucuronide

  源自葡萄的植物补充剂在动物模型系统中具有改善神经系统疾病（包括认知障碍）的功能。喂食葡萄提取物的大鼠大脑中会积聚 3′- O - 甲基 - 槲皮素 - 3 - O -β - d -葡萄糖醛酸苷 ( 3 )，表明3是一种潜在的治疗剂。开发3及相关4′ - O-甲基-槲皮素-7- O -β- d-葡萄糖醛酸苷( 4 )、3- O-甲基-槲皮素-3′- O -β- d-的合成方法葡萄糖醛酸苷 ( 5 ) 和 4′- O -甲基-槲皮素-3′- O -β- d -葡萄糖醛酸苷 ( 6 ) 在大脑中不存在，我们评估了酶法半合成和全化学合成方法。哺乳动物UDP-葡萄糖醛酸基转移酶的生物催化从4'- O-甲基槲皮素产生多种葡萄糖醛酸化产物，但不具有成本效益。另一方面，化学合成方法提供了良好的结果；3、5和6分六步合成，总产率分别为12%、18%和30%，而4分五步合成，总产率34%。还提出了在槲皮素葡萄