allyl (2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-(1->4)-[(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-(1->2)]-3,6-di-O-pivaloyl-β-D-glucopyranoside | 339204-58-9

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: allyl (2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-(1->4)-[(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-(1->2)]-3,6-di-O-pivaloyl-β-D-glucopyranoside
• 英文别名: Rha2Ac3Ac4Ac(a1-2)[Rha2Ac3Ac4Ac(a1-4)][pivaloyl(-3)][pivaloyl(-6)]Glc(b)-O-allyl；[(2R,3R,4S,5R,6R)-4-(2,2-dimethylpropanoyloxy)-6-prop-2-enoxy-3,5-bis[[(2S,3R,4R,5S,6S)-3,4,5-triacetyloxy-6-methyloxan-2-yl]oxy]oxan-2-yl]methyl 2,2-dimethylpropanoate
• CAS: 339204-58-9
• 化学式: C₄₃H₆₄O₂₂
• 分子量: 932.968
• InChiKey: OBHZHNZJDZTUKH-SGHNUYFCSA-N

物化性质

• 沸点：
  807.1±65.0 °C(Predicted)
• 密度：
  1.27±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  65
• 可旋转键数：
  26
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.77
• 拓扑面积：
  266
• 氢给体数：
  0
• 氢受体数：
  22

反应信息

• 作为反应物：
  描述：

  allyl (2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-(1->4)-[(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-(1->2)]-3,6-di-O-pivaloyl-β-D-glucopyranoside 在 四(三苯基膦)钯 甲醇 、 氢氧化钾 、 三氟化硼乙醚 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 二氯甲烷 、 溶剂黄146 为溶剂， 反应 24.0h， 生成 薯蓣皂甙
  参考文献：
  名称：

  含有木糖苷部分的新皂苷和新糖脂的合成。

  摘要：

  α-L-鼠李吡喃糖基-（1→4）-[α-L-鼠李吡喃糖基-（1→2）]-β-D-吡喃葡萄糖（chacotriose）是薯os的寡糖部分。Chacotriosyl trichloroacetimidate由d-葡萄糖和l-鼠李糖合成，并被糖基化为甲羟戊酸酯（洋地黄毒苷，胆固醇和甘草次酸），生成薯di皂苷和新皂苷。为了简化糖苷配基部分的结构，将甲羟戊酸酯部分替换为模仿糖基神经酰胺的双链新糖脂。细胞毒性试验表明，天然存在的β-形式的糖苷键很重要，薯di和最长链的新糖脂显示中等活性。

  DOI：

  10.1016/j.carres.2007.06.008
• 作为产物：
  描述：

  1,2,3,4,6-alpha-D-葡萄糖五乙酸酯 在 三氟化硼乙醚 作用下， 以 吡啶 、 二氯甲烷 为溶剂， 反应 4.0h， 生成 allyl (2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-(1->4)-[(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-(1->2)]-3,6-di-O-pivaloyl-β-D-glucopyranoside
  参考文献：
  名称：

  Synthesis of neosaponins having an α- l -rhamnopyranosyl-(1→4)-[α- l -rhamnopyranosyl-(1→2)]- d -glucopyranosyl glyco-linkage

  摘要：

  To verify the role of the alpha -L-rhamnopyranosyl-(1 --> 4)-[alpha -L-rhamnopyranosyl-( 1 -->2)]-beta -D-glucopyranosyl (chacotriosyl) moiety of steroidal glycosides from Solaum plants in their antitumor and antivirus activities, chacotriosides of diosgenin, cholesterol, and glycrrhetic acid were synthesized by developing our trans-oligoglycosidation. The chacotriosyl trichloroacetimidate was linked to the aglycones to afford neoglycosides as a mixture of alpha and beta anomers, that was easily separated with ODS chromatography. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(01)00173-3

文献信息

• Multicomponent Synthesis of Ugi-Type Ceramide Analogues and Neoglycolipids from Lipidic Isocyanides
  作者：Karell Pérez-Labrada、Ignacio Brouard、Inmaculada Méndez、Daniel G. Rivera

  DOI：10.1021/jo300462m

  日期：2012.5.18

  Unique types of ceramide and glycolipid architectures were obtained by means of Ugi reactions incorporating lipidic isocyanides as surrogates of sphingolipids. The multicomponent nature of this approach allowed for a highly efficient assembly process, wherein two of the components provided the lipidic tails while a third one incorporated either the functionality suitable for the conjugation to sugar or the sugar moiety itself. Two dissimilar strategies were implemented: (i) the initial assembly of ceramide analogues followed by glycosylation to produce a glycolipid skeleton and (ii) the one-pot construction of glycolipid frameworks by condensation of lipidic isocyanides either with lipidic amines and oligosaccharidic acids or with fatty acids and oligosaccharidic amines. Whereas both approaches are amenable for accessing analogues of anticancer glycolipids, the latter one proved to have greater potential owing to its more straightforward and efficient character. Overall, the methodology developed shows great promise toward the massive (eventually combinatorial) production of neoglycolipids suitable for biological screening.