(2R,3S)-5,7-dimethoxy-2-(4'-hydroxy-3'-methoxyphenyl)chroman-3-ol | 105330-62-9

• 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: (2R,3S)-5,7-dimethoxy-2-(4'-hydroxy-3'-methoxyphenyl)chroman-3-ol
• 英文别名: (2R,3S)-4'-hydroxy-3',5,7-tri-O-methyl-flavan-3-ol；3',5,7-trimethylcatechin；Catechin 5,7,3'-trimethyl ether；(2R,3S)-2-(4-hydroxy-3-methoxyphenyl)-5,7-dimethoxy-3,4-dihydro-2H-chromen-3-ol
• CAS: 105330-62-9
• 化学式: C₁₈H₂₀O₆
• 分子量: 332.353
• InChiKey: IJCWCJRLHJAVFD-KBXCAEBGSA-N

物化性质

• 沸点：
  541.1±50.0 °C(Predicted)
• 密度：
  1.283±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  24
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  77.4
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  重氮甲烷 、 (2R,3S)-5,7-dimethoxy-2-(4'-hydroxy-3'-methoxyphenyl)chroman-3-ol 以 甲醇 为溶剂， 反应 24.0h， 生成 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：

  萜类化合物和来自 viguiera quinqueradiata 的 flavan-3-ol

  摘要：

  摘要 报道了从紫荆树中分离出新的天然产物，乙酰leptocarpin 和 (2R,3S-4'-hydroxy-3',5,7-tri-O-methyl-flavan-3-ol。二萜 15α-angeloyloxy -ent-kaur-16-en-19-oic酸、15α-tigloyloxy-ent-kaur-16-en-19-oic酸和倍半萜内酯leptocarpin和budlein A也被发现。

  DOI：

  10.1016/s0031-9422(00)80405-7
• 作为产物：
  描述：

  (2S,3R,4S,5S,6R)-2-[4-[(2R,3S)-3-hydroxy-5,7-dimethoxy-3,4-dihydro-2H-chromen-2-yl]-2-methoxyphenoxy]-6-(hydroxymethyl)oxane-3,4,5-triol 以 水 、 二甲基亚砜 为溶剂， 反应 4.0h， 以14 mg的产率得到(2R,3S)-5,7-dimethoxy-2-(4'-hydroxy-3'-methoxyphenyl)chroman-3-ol
  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

• An efficient synthesis of the four mono methylated isomers of (+)-catechin including the major metabolites and of some dimethylated and trimethylated analogues through selective protection of the catechol ring
  作者：Cécile Cren-Olivé、Stéphane Lebrun、Christian Rolando

  DOI：10.1039/b107340k

  日期：2002.3.8

  The four monomethylated isomers of (+)-catechin in positions 3′, 4′, 5 and 7, two dimethylated derivatives, the 5,7-dimethylcatechin and the 3′,4′-dimethylcatechin and two trimethylated isomers of (+)-catechin in positions 3′, 5, 7 and 4′, 5, 7 were synthesized by a new method based on successive and selective protections of the various phenol functions present on (+)-catechin. The key step was the selective protection of the catechol ring with dichlorodiphenylmethane and di-tert-butyldichlorosilane.

  (+)-儿茶素在 3'、4'、5 和 7 位的四种单甲基化异构体，两种二甲基化衍生物，5,7-二甲基儿茶素和 3',4'-二甲基儿茶素以及 (+)-儿茶素的两种三甲基化异构体基于对(+)-儿茶素上存在的各种酚官能团的连续和选择性保护，通过一种新方法合成了位置3'、5、7和4'、5、7的儿茶素。关键步骤是用二氯二苯基甲烷和二叔丁基二氯硅烷选择性保护儿茶酚环。
• 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)。
• Terpenoids and a flavan-3-ol from viguiera quinqueradiata
  作者：Guillermo Delgado、Laura Alvarez、Alfonso Romo de Vivar

  DOI：10.1016/s0031-9422(00)80405-7

  日期：1984.1

  Abstract The isolation is reported of the new natural products from Viguiera quinqueradiata, acetylleptocarpin and (2R,3S-4′-hydroxy-3′,5,7-tri-O-methyl-flavan-3-ol. The diterpenes 15α-angeloyloxy-ent-kaur-16-en-19-oic acid, 15α-tigloyloxy-ent-kaur-16-en-19-oic acid and the sesquiterpene lactones leptocarpin and budlein A were also found.

  摘要 报道了从紫荆树中分离出新的天然产物，乙酰leptocarpin 和 (2R,3S-4'-hydroxy-3',5,7-tri-O-methyl-flavan-3-ol。二萜 15α-angeloyloxy -ent-kaur-16-en-19-oic酸、15α-tigloyloxy-ent-kaur-16-en-19-oic酸和倍半萜内酯leptocarpin和budlein A也被发现。