2-O-(β-D-glucuronopyranosyl)-β-D-glucopyranosylglycyrrhetic acid | 138267-96-6

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: 2-O-(β-D-glucuronopyranosyl)-β-D-glucopyranosylglycyrrhetic acid
• CAS: 138267-96-6；138268-00-5；145781-65-3；145781-66-4
• 化学式: C₄₂H₆₄O₁₅
• 分子量: 808.961
• InChiKey: IXEZXGJHEPIUPS-GSMWXASISA-N

物化性质

• 沸点：
  943.3±65.0 °C(Predicted)
• 密度：
  1.40±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.15
• 重原子数：
  57.0
• 可旋转键数：
  7.0
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  249.97
• 氢给体数：
  8.0
• 氢受体数：
  13.0

反应信息

• 作为产物：
  描述：

  乙酰溴-Alpha-D-葡萄糖酮酸甲基酯 在 palladium on activated charcoal sodium hydroxide 、 氢气 、 sodium methylate 、 silver trifluoromethanesulfonate 、 1,1,3,3-四甲基脲 作用下， 以 二氯甲烷 为溶剂， 反应 4.0h， 生成 2-O-(β-D-glucuronopyranosyl)-β-D-glucopyranosylglycyrrhetic acid
  参考文献：
  名称：

  Preparation of Glycyrrhetic Acid Glycosides Having Various .BETA.(1.RAR.2)-Linked Disaccharides and Their Cytoprotective Effects on Carbon Tetrachloride-Induced Hepatic Injury.

  摘要：

  通过逐步构建法分别合成了 2-O-β-D-吡喃葡萄糖基-β-D-吡喃葡萄糖、2-O-β-D-吡喃半乳糖基-β-D-吡喃葡萄糖、2-O-β-D-吡喃半乳糖基-β-D-吡喃葡萄糖、2-O-β-D-吡喃葡萄糖基-β-D-吡喃葡萄糖、2-O-β-D-吡喃葡萄糖基-β-D-吡喃葡萄糖；从葡萄糖醛酸单糖苷到二糖苷。将苷 1-7 和 2-O-(β-D-吡喃葡萄糖基)-β-D-吡喃葡萄糖基-11-氧代甘草甜素-12-烯-30-酸酯（8）的细胞保护活性与天然存在的甘草甜素（9）进行了比较。在这些苷 1-8 中，苷 3 和苷 7 以 β-D-吡喃葡萄糖（glcUA）为唯一的末端糖成分，是比甘草苷 9 更有效的抗肝损伤材料。

  DOI：

  10.1248/cpb.39.2333

文献信息

• Preparation of Glycyrrhetic Acid .BETA.-Glycosides Having .BETA.(1.RAR.2)-Linked Disaccharides by the Use of 2-O-Trichloroacetyl-.BETA.-D-pyranosyl Chlorides and Their Cytoprotective Effects on Hepatic Injury in Vivo.
  作者：Setsuo SAITO、Yuka SASAKI、Kaoru KURODA、Yasunobu HAYASHI、Shigeya SUMITA、Yoichi NAGAMURA、Keiji NISHIDA、Isao ISHIGURO

  DOI：10.1248/cpb.41.539

  日期：——

  Stepwise glycosidation was adopted for the construction of glycyrrhetic acid β-glycosides (27-30) having β(1→2)-linked disaccharides such as 2-O-β-D-flucuronopyranosyl-β-D-glucopyranose, 2-O-β-D-glucuronopyranosyl-β-D-galactopyranose, 2-O-β-D-glucopyranosyl-β-D-glucuronopyranose and 2-O-β-D-galactopyranosyl-β-D-glucuronopyranose. In the first glycosidation, 2-O-trichloroacety-β-D-pyranosyl chlorides (9-11) were utilized as starting sugar derivatives to react with methyl glycyrrhetinate (5) : Glycosidation of 5 with 9 and 10 gave β- and α-monoglycosides (12) and (13), and (15) and (16), respectively. Treatment of the β-glycoside 12 and 15 with ammonia-saturated ether gave products (14) and (17), respectively. The glycosidation of 5 with 11 followed by treatment with ammonia-saturated ether gave compounds (18) and (19), respectively. The second step glycosidations of 14 and 17 with methyl 2, 3, 4-tri-ο-acetyl-α-D-glucuronatopyranosyl bromide (20) gave diglycoside derivatives (23) and (24), respectively, and that of 18 with 2, 3, 4, 6-tetra-O-acetyl-α-D-glucopyranosyl bromide (21) and -α-D-galactopyranosyl bromide (22) gave deglycoside derivatives (25) and (26), respectively. The removal of the protecting groups of 23-26 gave diglycosides 27-30, respectively, having a β-D-glucuronopyranose (β-D-glcUA) as one of two sugar components in the molecules. The cytoprotective effects of the synthesized glycosides 27-30 on carbon tetrachloride (CCl4)-induced hepatotoxicity in vivo were compared with deglycosides 31-33 having only neutral sugar components, and naturally occurring glycyrrhizin (34) having two acidic sugar components (β-D-glcUA). While glycosides 31-33 had no cytoprotective effect, glycosides 27-30 showed potent effects. Especially, 27 and 28, having a β-D-glcUA as the terminal sugar component, were more effective meterials against hepatic injury than glycyrrhizin 34.

  采用分步糖苷化法构建了具有β(1→2)连接的二糖的甘草酸β-糖苷（27-30），这些二糖包括2-O-β-D-氟尿喹喃糖基-β-D-葡萄糖、2-O-β-D-古糖喹喃糖基-β-D-半乳糖、2-O-β-D-葡萄糖喹喃糖基-β-D-古糖和2-O-β-D-半乳糖喹喃糖基-β-D-古糖。在第一次糖苷化中，使用了2-O-三氯乙酰-β-D-吡喃糖氯化物（9-11）作为起始糖衍生物，与甘草酸甲酯（5）反应：5与9和10的糖苷化分别得到了β-和α-单糖苷（12）和（13），以及（15）和（16）。 β-糖苷12和15与氨饱和醚反应后分别得到产物（14）和（17）。5与11的糖苷化，再与氨饱和醚反应，分别得到了化合物（18）和（19）。14和17与甲基2, 3, 4-三-O-乙酰-α-D-古糖喹喃糖溴化物（20）的第二步糖苷化分别得到二糖苷衍生物（23）和（24），而18与2, 3, 4, 6-四-O-乙酰-α-D-葡萄糖喹喃糖溴化物（21）和-α-D-半乳糖喹喃糖溴化物（22）的糖苷化分别得到去糖苷衍生物（25）和（26）。去除23-26的保护基团分别得到二糖苷27-30，这些化合物在分子中有一个β-D-古糖喹喃糖（β-D-glcUA）作为两个糖组分之一。合成的糖苷27-30对四氯化碳（CCl4）诱导的肝毒性在体内的细胞保护作用与去糖苷31-33（只有中性糖组分）及天然存在的甘草苷（34，具有两个酸性糖组分 β-D-glcUA）进行了比较。虽然糖苷31-33没有细胞保护作用，但糖苷27-30显示出显著的作用。尤其是，27和28作为末端糖组分具有β-D-glcUA，比甘草苷34对肝损伤的保护效果更佳。