4-benzylsulfanyl-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol

• 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: 4-benzylsulfanyl-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
• 化学式: C₂₂H₂₀O₆S
• 分子量: 412.5
• InChiKey: YYEFTOIQHQHUQZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  29
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  136
• 氢给体数：
  5
• 氢受体数：
  7

文献信息

• Synthesis of dimeric, trimeric, tetrameric pentameric, and higher oligomeric epicatechin-derived procyanidins having 4beta,8-interflavan linkages and their use to inhibit cancer cell growth through cell cycle arrest
  申请人：——

  公开号：US20040116718A1

  公开（公告）日：2004-06-17

  Various processes are disclosed for preparing protected epicatechin oligomers having (4&bgr;,8)-interflavan linkages. In one process, a tetra-O-protected epicatechin monomer or oligomer is coupled with a protected, C-4 activated epicatechin monomer in the presence of an acidic clay such as a mortmorillonite clay. In another process, a 5,7,3′,4′-benzyl protected or a 3-acetyl-, 5,7,3′,4′-benzyl protected epicatechin or catechin monomer or oligomer is reacted with 3-O-acetyl-4-[(2-benzothiazolyl)thio]-5,7,3′,4′-tetra-O-benzylepicatechin in the presence of silver tetrafluoroborate. In another process, two 5,7,3′,4′-benzyl protected epicatechin monomers activated with 2-(benzothiazolyl)thio groups at the C-4 positions are cross-coupled in the presence of silver tetrofluoroborate. A process is also disclosed for reacting an unprotected epicatechin or catechin monomer with 4-(benzylthio) epicatechin or catechin. The use of naturally-derived and synthetically-prepared procyanidin (4&bgr;,8) 4 -pentamers to treat cancer is also disclosed.

  揭示了多种制备具有（4'，8）-交互缬氨酸连接的受保护表儿茶素寡聚物的过程。在一种过程中，通过在存在酸性粘土（如蒙脱石粘土）的情况下，将四重受保护的表儿茶素单体或寡聚体与受保护的C-4活化的表儿茶素单体偶联。在另一种过程中，通过在存在四氟硼酸银的情况下，将5,7,3′,4′-苄基保护或3-乙酰基-，5,7,3′,4′-苄基保护的表儿茶素或儿茶素单体或寡聚体与3-O-乙酰基-4-[（2-苯并噻唑基）硫]-5,7,3′,4′-四重苄基表儿茶素反应。在另一种过程中，两个在C-4位置激活了2-（苯并噻唑基）硫基团的5,7,3′,4′-苄基保护表儿茶素单体交叉偶联，在四氟硼酸银的存在下。还揭示了一种过程，用于将未受保护的表儿茶素或儿茶素单体与4-（苄硫基）表儿茶素或儿茶素反应。还揭示了使用天然衍生和合成制备的（4'，8）4-五聚体前花青素来治疗癌症。
• Synthesis of dimeric, trimeric, tetrameric, pentameric, and higher oligomeric epicatechin-derived procyanidins having 4beta,8-interflavan linkages and their use to inhibit cancer cell growth through cell cycle arrest
  申请人：Kozikowski P. Alan

  公开号：US20060173198A1

  公开（公告）日：2006-08-03

  Various processes are disclosed for preparing protected epicatechin oligomers having (4β,8)-interflavan linkages. In one process, a tetra-O-protected epicatechin monomer or oligomer is coupled with a protected, C-4 activated epicatechin monomer in the presence of an acidic clay such as a mortmorillonite clay. In another process, a 5,7,3′,4′-benzyl protected or a 3-acetyl-, 5,7,3′,4′-benzyl protected epicatechin or catechin monomer or oligomer is reacted with 3-O-acetyl-4-[(2-benzothiazolyl)thio]-5,7,3′,4′-tetra-O-benzylepicatechin in the presence of silver tetrafluoroborate. In another process, two 5,7,3′,4′-benzyl protected epicatechin monomers activated with 2-(benzothiazolyl)thio groups at the C-4 positions are cross-coupled in the presence of silver tetrofluoroborate. A process is also disclosed for reacting an unprotected epicatechin or catechin monomer with 4-(benzylthio) epicatechin or catechin. The use of naturally-derived and synthetically-prepared procyanidin (4β,8) 4 -pentamers to treat cancer is also disclosed.
• PROANTHOCYANIDIN OF CASHEW APPLE, COMPOSITION CONTAINING PROANTHOCYANIDIN, AND APPLICATION THEREOF
  申请人：Nagamine Kenichi

  公开号：US20110263698A1

  公开（公告）日：2011-10-27

  This invention provides useful applications of cashew apple. This invention also provides a naturally occurring active ingredient having useful activities, such as alpha-amylase inhibitory activity, lipase inhibitory activity, and antibacterial activity against Propionibacterium acnes . The invention also provides a composition containing cashew apple-derived proanthocyanidin having excellent alpha-amylase inhibitory activity, lipase inhibitory activity, and antibacterial activity against Propionibacterium acnes , which is prepared by allowing a plant fiber-degrading enzyme (e.g., pectinase) to react with a cashew apple and concentrating the resultant with the use of an ultrafiltration membrane. Further, the invention provides a proanthocyanidin compound having a novel structure.
• US7067679B2
  申请人：——

  公开号：US7067679B2

  公开（公告）日：2006-06-27
• US7507831B2
  申请人：——

  公开号：US7507831B2

  公开（公告）日：2009-03-24