(+)-catechin 6-C-β-D-glucopyranoside | 105371-27-5

• 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: (+)-catechin 6-C-β-D-glucopyranoside
• 英文别名: (+)-catechin-6-C-β-D-glucopyranoside；(+)-Catechin-6-C-I(2)-D-glucopyranoside；(2R,3S)-2-(3,4-dihydroxyphenyl)-6-[(2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-3,4-dihydro-2H-chromene-3,5,7-triol
• CAS: 105371-27-5
• 化学式: C₂₁H₂₄O₁₁
• 分子量: 452.415
• InChiKey: PWMSPKVTJLJDDS-CPKJHJHWSA-N

物化性质

• 沸点：
  867.5±65.0 °C(Predicted)
• 密度：
  1.713±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1
• 重原子数：
  32
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  201
• 氢给体数：
  9
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  (+)-catechin 6-C-β-D-glucopyranoside 、 硫酸二甲酯 在 potassium carbonate 作用下， 以 丙酮 为溶剂， 反应 6.0h， 以15 mg的产率得到(2S,3R,4R,5S,6R)-2-[(2R,3S)-2-(3,4-dimethoxyphenyl)-3-hydroxy-5,7-dimethoxy-3,4-dihydro-2H-chromen-6-yl]-6-(hydroxymethyl)oxane-3,4,5-triol
  参考文献：
  名称：

  Tannins and related compounds. XLV Rhubarb. 5 Isolation and characterization of flavan-3-ol and procyanidin glucosides.

  摘要：

  通过对优质商品大黄（Choukichio：？(+)-catechin 5-O-β-D-glucopyranoside (1)、(+)-catechin 7-O-β-D-glucopyranoside (2)、procyanidin B-2 8-C-β-D-glucopyranoside (3) 和 procyanidin B-2 6-C-β-D-glucopyranoside (4)。根据化学和光谱证据，前两种化合物被定性为(+)-儿茶素 3'-O-β-D-Glucopyranoside (5)、(+)-catechin 4'-O-β-D-glucopyranoside (6)、(+)-catechin 7, 3'-di-O-β-D-glucopyranoside (7)、(+)-catechin 5, 3'-di-O-β-D-glucopyranoside (8)、(+)-catechin 3'、4'-二-O-β-D-吡喃葡萄糖苷 (9)，(+)-儿茶素 5，4'-二-O-β-D-吡喃葡萄糖苷 (10)，(+)-儿茶素 8-C-β-D-吡喃葡萄糖苷 (11)，(+)-儿茶素 6-C-β-D-吡喃葡萄糖苷 (12)、原花青素 B-3 7-O-β-D-Glucopyranoside (13)、原花青素 B-1 8-C-β-D-Glucopyranoside (14) 和原花青素 B-1 6-C-β-D-Glucopyranoside (15)。

  DOI：

  10.1248/cpb.34.3208
• 作为产物：
  描述：

  (2S,3R,4S,5S,6R)-2-[5-[(2R,3S)-3-hydroxy-5,7-dimethoxy-3,4-dihydro-2H-chromen-2-yl]-2-methoxyphenoxy]-6-(hydroxymethyl)oxane-3,4,5-triol 在 对甲苯磺酸 作用下， 以 1,4-二氧六环 、 水 、 二甲基亚砜 为溶剂， 反应 10.0h， 生成 (+)-catechin 6-C-β-D-glucopyranoside
  参考文献：
  名称：

  Tannins and related compounds. XLV Rhubarb. 5 Isolation and characterization of flavan-3-ol and procyanidin glucosides.

  摘要：

  通过对优质商品大黄（Choukichio：？(+)-catechin 5-O-β-D-glucopyranoside (1)、(+)-catechin 7-O-β-D-glucopyranoside (2)、procyanidin B-2 8-C-β-D-glucopyranoside (3) 和 procyanidin B-2 6-C-β-D-glucopyranoside (4)。根据化学和光谱证据，前两种化合物被定性为(+)-儿茶素 3'-O-β-D-Glucopyranoside (5)、(+)-catechin 4'-O-β-D-glucopyranoside (6)、(+)-catechin 7, 3'-di-O-β-D-glucopyranoside (7)、(+)-catechin 5, 3'-di-O-β-D-glucopyranoside (8)、(+)-catechin 3'、4'-二-O-β-D-吡喃葡萄糖苷 (9)，(+)-儿茶素 5，4'-二-O-β-D-吡喃葡萄糖苷 (10)，(+)-儿茶素 8-C-β-D-吡喃葡萄糖苷 (11)，(+)-儿茶素 6-C-β-D-吡喃葡萄糖苷 (12)、原花青素 B-3 7-O-β-D-Glucopyranoside (13)、原花青素 B-1 8-C-β-D-Glucopyranoside (14) 和原花青素 B-1 6-C-β-D-Glucopyranoside (15)。

  DOI：

  10.1248/cpb.34.3208

文献信息

• Nonenzymatic <i>C</i>-Glycosylation of Flavan-3-ols by Oligo- and Polysaccharides
  作者：Timo Stark、Daniela Keller、Kerstin Wenker、Hedda Hillmann、Thomas Hofmann

  DOI：10.1021/jf0719508

  日期：2007.11.1

  Model reactions between the polysaccharide amylose and the polyphenol (-)-epicatechin followed by partial enzymatic hydrolysis of the reaction products formed led to the detection of mono- and oligo-C-glucosylated flavan-3-ols by means of LC-MS/MS experiments. To confirm the structure of these putative flavan-3-ol/oligosaccharide conjugates, (-)-epicatechin was reacted with maltose and maltotriose, respectively, giving rise to a series of previously unreported flavan-3-ol/maltose and flavan-3-ol/maltotriose conjugates, namely, (-)-epicatechin-8-C-beta-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranoside, (-)-catechin-C- 8-C-beta-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranoside, (-)-catechin-6-C-beta-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranoside, (-)-catechin-8-C-beta-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranoside, (-)-catechin-6-C-beta-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranoside, and (-)-epicatechin-6/8-C-beta-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranosyl-(4 -> 1)-O-alpha-D-glucopyranoside. Furthermore, quantitative analysis of flavan-3-ol-C-glucosides in an enzymatic total hydrolysate using a newly developed stable isotope dilution assay (SIDA) enabled a first insight into the yield of the formation of polyphenol/polysaccharide cross-links, for example, an amount of 14.0, 9.0, and 0.15 mu mol of flavan-3-ol-6-C-beta-D-glucopyranoside, flavan-3-ol-8-C-beta-D-glucopyranoside, and flavan-3-ol-6-C,8-C- beta-D-glucopyranoside were per mmol (-)-epicatechin when reacted with amylose.