diosgenyl 2,4-di-O-(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-3,6-di-O-pivaloyl-β-D-glucopyranoside | 335591-71-4

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: diosgenyl 2,4-di-O-(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-3,6-di-O-pivaloyl-β-D-glucopyranoside
• 英文别名: diosgenin-3-yl 2,4-di-O-(2,3,4-tri-O-acetyl-L-rhamnopyranosyl)-3,6-di-O-pivaloyl-D-glucopyranoside；diosgenin-3β-yl (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；(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-glucopyranosyl diosgenin；[(2R,3R,4S,5R,6R)-4-(2,2-dimethylpropanoyloxy)-6-[(1S,2S,4S,5'R,6R,7S,8R,9S,12S,13R,16S)-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icos-18-ene-6,2'-oxane]-16-yl]oxy-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: 335591-71-4
• 化学式: C₆₇H₁₀₀O₂₄
• 分子量: 1289.52
• InChiKey: ASSXCLFBXMJKSZ-IYSQDILOSA-N

物化性质

• 密度：
  1.26±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  8.7
• 重原子数：
  91
• 可旋转键数：
  25
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.85
• 拓扑面积：
  284
• 氢给体数：
  0
• 氢受体数：
  24

反应信息

• 作为反应物：
  描述：

  diosgenyl 2,4-di-O-(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-3,6-di-O-pivaloyl-β-D-glucopyranoside 在 甲醇 、 氢氧化钾 作用下， 反应 20.0h， 以97%的产率得到薯蓣皂甙
  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：

  薯蓣皂素 在 吡啶 、 三氟甲磺酸三甲基硅酯 、 sodium methylate 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 生成 diosgenyl 2,4-di-O-(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-3,6-di-O-pivaloyl-β-D-glucopyranoside
  参考文献：
  名称：

  Glycosyl Trifluoroacetimidates. 2. Synthesis of Dioscin and Xiebai Saponin I

  摘要：

  Two trisaccharide steroidal saponins, dioscin (1) and Xiebai saponin 1 (2) with various bioactivities, were efficiently synthesized using the newly developed glycosyl N-phenyl trifluoroacetimidates (10-13) as glycosylation donors. Thus, dioscin was synthesized in five steps and a 33% overall yield from diosgenin and glycosyl trifluoroacetimidates (10 and 11). Xiebai saponin I was synthesized in eight steps and a 32% overall yield from laxogenin and glycosyl trifluoroacetimidates (10, 12, and 13), whereupon, the rare steroid laxogenin was prepared from diosgenin in four steps and an overall 69% yield. All the glycosylation reactions involved in the present syntheses demonstrated that glycosyl trifluoroacetimidates were successful donors comparable to the corresponding glycosyl trichloroacetimidates.

  DOI：

  10.1021/jo026103c

文献信息

• An efficient glycosylation protocol with glycosyl ortho-alkynylbenzoates as donors under the catalysis of Ph3PAuOTf
  作者：Yao Li、You Yang、Biao Yu

  DOI：10.1016/j.tetlet.2008.04.017

  日期：2008.5

  A new and powerful glycosylation protocol with glycosyl ortho-alkynylbenzoates as donors and Ph3PAuOTf as a promoter is disclosed. The donors are readily available and stable; the glycosidic coupling yields are generally excellent; the promotion system is catalytic, neutral, and orthogonal to the known glycosylation conditions.

  公开了一种新的且功能强大的糖基化方案，其中糖基邻炔基苯甲酸酯为供体，Ph 3 PAuOTf为启动子。捐助者随时可用且稳定；糖苷偶联的产量通常是优异的；促进系统是催化的，中性的，并且与已知的糖基化条件正交。
• Synthesis of neosaponins having an α- l -rhamnopyranosyl-(1→4)-[α- l -rhamnopyranosyl-(1→2)]- d -glucopyranosyl glyco-linkage
  作者：Tsuyoshi Ikeda、Hiroyuki Miyashita、Tetsuya Kajimoto、Toshihiro Nohara

  DOI：10.1016/s0040-4039(01)00173-3

  日期：2001.3

  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.
• An improved synthesis of the saponin, polyphyllin D
  作者：Bing Li、Biao Yu*、Yongzheng Hui*、Ming Li、Xiuwen Han、Kwok-Pui Fung

  DOI：10.1016/s0008-6215(01)00014-3

  日期：2001.3

  Polyphyllin D, namely diosgenyl alpha -L-rhamnopyranosyl-(1->2)-[(alpha -L-arabinofuranosyl)-(1->4)]-beta -D-glucopyranoside, was synthesized from diosgenyl-beta -D-glucopyranoside in four steps and in 30% overall yield, taking advantage of regioselective pivaloylation and alpha -L-rhamnopyranosylation reactions. (C) 2001 Elsevier Science Ltd. All rights reserved.
• Efficient synthesis of α- and β-chacotriosyl glycosides using appropriate donors, and their cytotoxic activity
  作者：Hiroyuki Miyashita、Yuuki Kai、Toshihiro Nohara、Tsuyoshi Ikeda

  DOI：10.1016/j.carres.2008.02.012

  日期：2008.6

  Natural steroidal glycosides containing alpha-L-rhamnopyranosyl-(1 -> 4)-[alpha-L-rhamnopyranosyl-(1 -> 2)]-beta-D-glucopyranose (chacotriose) at the oligosaccharide moiety exhibit anti-cancer and anti-herpes activities. To investigate the structure-Activity relationships of the aglycone parts of chacotriosides, we developed a synthesis method for chacotriosyl glycosides having various aglycones. In the process, it was revealed that alpha-chacotriosyl glycosides could be obtained mainly by using a trichloroacetimidate donor, while beta-chacotriosyl glycosides were afforded by using phosphite and phosphate donors. In cytotoxicity tests using the A549 and HepG2 cell lines, naturally occurring beta-chacotriosyl diosgenin and cholestanol exhibited higher activities than the corresponding alpha-chacotriosyl glycosides. (C) 2008 Elsevier Ltd. All rights reserved.