phenethanol-β-vicianoside | 125572-77-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: phenethanol-β-vicianoside
• 英文别名: 2-phenylethyl α-L-arabinopyranosyl-(1→6)-β-D-glucopyranoside；Ara(a1-6)Glc(b)-O-EtPh；(2R,3R,4S,5S,6R)-2-(2-phenylethoxy)-6-[[(2S,3R,4S,5S)-3,4,5-trihydroxyoxan-2-yl]oxymethyl]oxane-3,4,5-triol
• CAS: 125572-77-2
• 化学式: C₁₉H₂₈O₁₀
• 分子量: 416.425
• InChiKey: ZRGXCWYRIBRSQA-UUOPEYFDSA-N

物化性质

• 沸点：
  661.3±55.0 °C(Predicted)
• 密度：
  1.49±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -2.2
• 重原子数：
  29
• 可旋转键数：
  7
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.68
• 拓扑面积：
  158
• 氢给体数：
  6
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  phenethanol-β-vicianoside 在 β-primeverosidase from tea leaves of Camellia sinensis 作用下， 以 various solvents 、 水 为溶剂， 反应 0.83h， 生成 vicianose 、 苯乙醇
  参考文献：
  名称：

  β-primeverosidase（乌龙茶和红茶生产过程中形成香气的关键酶）的底物特异性。

  摘要：

  我们合成了9种二糖苷和2-苯基乙醇单糖苷，以研究茶树种（Camellia sinensis var。sinensis cv。Yabukita）鲜叶中纯化的β-primeverosidase的底物特异性，并比较其表面底物特异性。茶叶中的粗酶提取物。粗酶提取物主要表现出β-primeverosidase活性，尽管在一定程度上存在单糖苷酶活性。纯化的β-primeverosidase对糖蛋白部分显示非常狭窄的底物特异性，尤其是对β-primeverosyl（6-O-β-D-吡喃吡喃糖基-β-D-葡萄糖基吡喃糖基）部分的特异性。这些酶会水解天然存在的二糖苷，例如β-primeveroside，β-vicianoside，β-acuminoside，β-龙胆苷和6-O-α-L-阿拉伯呋喃糖基-β-D-吡喃葡萄糖苷，但无法水解合成的非天然二糖苷。纯化的酶对2-苯乙基β-D-吡喃葡萄糖苷没有活性。该酶将

  DOI：

  10.1271/bbb.65.2719
• 作为产物：
  描述：

  2,3,4-tri-O-benzoyl-β-L-arabinopyranosyl bromide 在 sodium methylate 、 氰化汞 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 18.0h， 生成 phenethanol-β-vicianoside
  参考文献：
  名称：

  The Role of Diglycosides as Tea Aroma Precursors:  Synthesis of Tea Diglycosides and Specificity of Glycosidases in Tea Leaves

  摘要：

  Two general synthetic routes were established in order to synthesize two diglycosides, primeverosides (1) and vicianosides (2), found in tea leaves. Procedure 1 is based on the Koenig-Knorr type of condensation of aglycon alcohols and 1-alpha-bromohexabenzoylprimeverose (6) and is suitable for the condensation of primary alcohols. Procedure 2 is to combine tribenzoyl-beta-D-glucoside (8) and 1-alpha-bromotribenzoylxylose (4). The primeveroside of a tertiary alcohol was synthesized by this method which is also applicable to the synthesis of vicianosides. The hydrolysis rate of each of the 12 synthesized glycosides by a crude tea enzyme was evaluated, which suggest that the main glycosidase is primeverosidase and the enzyme mixture shows substrate specificity to both the carbohydrate and aglycon moieties.

  DOI：

  10.1021/jf960852b

文献信息

• Chemoenzymatic Synthesis of Naturally Occurring Phenethyl (1→6)-β-D-Glucopyranosides
  作者：Hiroyuki Akita、Eiji Kawahara、Miho Nishiuchi、Mikio Fujii、Keisuke Kato、Yoshiteru Ida

  DOI：10.3987/com-05-10383

  日期：——
• Substrate Specificity of β-Primeverosidase, A Key Enzyme in Aroma Formation during Oolong Tea and Black Tea Manufacturing
  作者：Seung-Jin MA、Masaharu MIZUTANI、Jun HIRATAKE、Kentaro HAYASHI、Kensuke YAGI、Naoharu WATANABE、Kanzo SAKATA

  DOI：10.1271/bbb.65.2719

  日期：2001.1

  monoglycoside of 2-phenylethanol to investigate the substrate specificity of the purified beta-primeverosidase from fresh leaves of a tea cultivar (Camellia sinensis var. sinensis cv. Yabukita) in comparison with the apparent substrate specificity of the crude enzyme extract from tea leaves. The crude enzyme extract mainly showed beta-primeverosidase activity, although monoglycosidases activity was present

  我们合成了9种二糖苷和2-苯基乙醇单糖苷，以研究茶树种（Camellia sinensis var。sinensis cv。Yabukita）鲜叶中纯化的β-primeverosidase的底物特异性，并比较其表面底物特异性。茶叶中的粗酶提取物。粗酶提取物主要表现出β-primeverosidase活性，尽管在一定程度上存在单糖苷酶活性。纯化的β-primeverosidase对糖蛋白部分显示非常狭窄的底物特异性，尤其是对β-primeverosyl（6-O-β-D-吡喃吡喃糖基-β-D-葡萄糖基吡喃糖基）部分的特异性。这些酶会水解天然存在的二糖苷，例如β-primeveroside，β-vicianoside，β-acuminoside，β-龙胆苷和6-O-α-L-阿拉伯呋喃糖基-β-D-吡喃葡萄糖苷，但无法水解合成的非天然二糖苷。纯化的酶对2-苯乙基β-D-吡喃葡萄糖苷没有活性。该酶将
• The Role of Diglycosides as Tea Aroma Precursors:  Synthesis of Tea Diglycosides and Specificity of Glycosidases in Tea Leaves
  作者：Sachiko Matsumura、Shunya Takahashi、Mariko Nishikitani、Kikue Kubota、Akio Kobayashi

  DOI：10.1021/jf960852b

  日期：1997.7.1

  Two general synthetic routes were established in order to synthesize two diglycosides, primeverosides (1) and vicianosides (2), found in tea leaves. Procedure 1 is based on the Koenig-Knorr type of condensation of aglycon alcohols and 1-alpha-bromohexabenzoylprimeverose (6) and is suitable for the condensation of primary alcohols. Procedure 2 is to combine tribenzoyl-beta-D-glucoside (8) and 1-alpha-bromotribenzoylxylose (4). The primeveroside of a tertiary alcohol was synthesized by this method which is also applicable to the synthesis of vicianosides. The hydrolysis rate of each of the 12 synthesized glycosides by a crude tea enzyme was evaluated, which suggest that the main glycosidase is primeverosidase and the enzyme mixture shows substrate specificity to both the carbohydrate and aglycon moieties.