(+)-catechin 7,4'-di-O-methylate | 105330-66-3

• 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 7,4'-di-O-methylate
• 英文别名: 7,4'-di-O-methyl-(+)-catechin；catechin-4',7-dimethyl ether；Catechin 7,4'-dimethyl ether；(2R,3S)-2-(3-hydroxy-4-methoxyphenyl)-7-methoxy-3,4-dihydro-2H-chromene-3,5-diol
• CAS: 105330-66-3
• 化学式: C₁₇H₁₈O₆
• 分子量: 318.326
• InChiKey: MWTVZZZJXLZCEN-WMLDXEAASA-N

物化性质

• 沸点：
  556.4±50.0 °C(Predicted)
• 密度：
  1.364±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  23
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  88.4
• 氢给体数：
  3
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  重氮甲烷 、 (+)-catechin 7,4'-di-O-methylate 以 乙醚 、 乙醇 为溶剂， 以9 mg的产率得到2alpha-(3,4-二甲氧基苯基)-5,7-二甲氧基-3,4-二氢-2H-1-苯并吡喃-3beta-醇
  参考文献：
  名称：

  Morimoto, Satoshi; Nonaka, Gen-Ichiro; Nishioka, Itsuo, Chemical and pharmaceutical bulletin, 1985, vol. 33, # 6, p. 2281 - 2286

  摘要：

  DOI：
• 作为产物：
  描述：

  (2S,3R,4S,5S,6R)-2-(((2R,3S)-3-hydroxy-7-methoxy-2-(4-methoxy-3-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)phenyl)chroman-5-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol 以 水 为溶剂， 以2.5 mg的产率得到(+)-catechin 7,4'-di-O-methylate
  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

• Tannins and related compounds. XLV Rhubarb. 5 Isolation and characterization of flavan-3-ol and procyanidin glucosides.
  作者：YOSHIKI KASHIWADA、GEN-ICHIRO NONAKA、ITSUO NISHIOKA

  DOI：10.1248/cpb.34.3208

  日期：——

  A chemical examination of high-quality commercial rhubarb (Choukichio : ?? ?? ?? ) has led to the isolation and characterization of eight flavan-3-ol glucosides and three proanthocyanidin glucosides, together with several known compounds, i.e., (+)-catechin 5-O-β-D-glucopyranoside (1), (+)-catechin 7-O-β-D-glucopyranoside (2), procyanidin B-2 8-C-β-D-glucopyranoside (3) and procyanidin B-2 6-C-β-D-glucopyranoside (4). On the basis of chemical and spectroscopic evidence, the former compounds were characterized as (+)-catechin 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'-di-O-β-D-glucopyranoside (9), (+)-catechin 5, 4'-di-O-β-D-glucopyranoside (10), (+)-catechin 8-C-β-D-glucopyranoside (11), (+)-catechin 6-C-β-D-glucopyranoside (12), procyanidin B-3 7-O-β-D-glucopyranoside (13), procyanidin B-1 8-C-β-D-glucopyranoside (14) and procyanidin B-1 6-C-β-D-glucopyranoside (15).

  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)。
• Morimoto, Satoshi; Nonaka, Gen-Ichiro; Nishioka, Itsuo, Chemical and pharmaceutical bulletin, 1985, vol. 33, # 6, p. 2281 - 2286
  作者：Morimoto, Satoshi、Nonaka, Gen-Ichiro、Nishioka, Itsuo、Ezaki, Nobuhisa、Takizawa, Nobuo

  DOI：——

  日期：——