diosgenyl 3,6-di-O-pivaloyl-β-D-glucopyranoside | 335591-63-4

• 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 3,6-di-O-pivaloyl-β-D-glucopyranoside
• 英文别名: [(2R,3R,4S,5R,6R)-4-(2,2-dimethylpropanoyloxy)-3,5-dihydroxy-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]oxyoxan-2-yl]methyl 2,2-dimethylpropanoate
• CAS: 335591-63-4
• 化学式: C₄₃H₆₈O₁₀
• 分子量: 745.007
• InChiKey: IAXKXMKRMYBTSJ-RVEIPVOGSA-N

物化性质

• 沸点：
  766.2±60.0 °C(Predicted)
• 密度：
  1.19±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  7.5
• 重原子数：
  53
• 可旋转键数：
  9
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.91
• 拓扑面积：
  130
• 氢给体数：
  2
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  diosgenyl 3,6-di-O-pivaloyl-β-D-glucopyranoside 在 sodium hydroxide 、 三氟甲磺酸三甲基硅酯 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 为溶剂， 生成 薯蓣皂甙
  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
• 作为产物：
  描述：

  2,3,4,6-四-O-苯甲酰基葡萄糖三氯乙酰亚胺酯 在 吡啶 、 甲醇 、 三氟甲磺酸三甲基硅酯 、 sodium methylate 作用下， 以 二氯甲烷 为溶剂， 反应 8.0h， 生成 diosgenyl 3,6-di-O-pivaloyl-β-D-glucopyranoside
  参考文献：
  名称：

  An Improved Synthesis of Methyl Protodioscin. II. A Direct E-ring Opening by BF₃–Et₂O/Ac₂O from Dioscin Ester

  摘要：

  研究了BF3–Et2O/Ac2O直接打开地奥司酯E环的方法，通过三步合成得到了甲基原人参二醇酯，总产率为44%。详细讨论了E环开裂反应的细节，并观察到C16-OAc键具有显著的稳定性。

  DOI：

  10.1246/cl.2012.1015

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 novel diosgenyl saponin analogs and evaluation effects of rhamnose moeity on their cytotoxic activity
  作者：Xin Meng、Yiwu Pan、Tao Liu、Chen Luo、Shuli Man、Yongmin Zhang、Yan Zhang

  DOI：10.1016/j.carres.2021.108359

  日期：2021.8

  type of natural products derived from plants, are the main active component of traditional chinese medicine. Inspiringly, a large number of natural diosgensyl saponins have been shown to exert excellent toxicity to hepatocellular cancer (HCC) cells. In order to better understand the relationship between the structures and their biological effects, a group of diosgenyl saponins (1–4 as natural products

  薯蓣皂苷是一类从植物中提取的天然产物，是中药的主要活性成分。令人鼓舞的是，大量天然薯蓣皂苷已被证明对肝细胞癌细胞（HCC）具有极好的毒性。为了更好地理解其结构与其生物效应之间的关系，高效合成了一组薯蓣皂苷（ 1-4为天然产物， 5和6为其类似物）。在人肝细胞癌 (HepG2) 细胞上评估了这些化合物的细胞毒活性。构效关系研究表明，五糖或六糖皂苷类似物的活性比相应的二糖类似物或薯蓣皂苷的活性相对较低。这些皂苷上4支链鼠李糖部分的延伸对其细胞毒活性没有表现出明显的影响，这表明一定数量的鼠李糖部分和连接方式可以影响类固醇皂苷对HepG2细胞的细胞毒性。
• <i>n</i>-Pentenyl-Type Glycosides for Catalytic Glycosylation and Their Application in Single-Catalyst One-Pot Oligosaccharide Assemblies
  作者：Yujia Zu、Chenglin Cai、Jingyuan Sheng、Lili Cheng、Yingle Feng、Shengyong Zhang、Qi Zhang、Yonghai Chai

  DOI：10.1021/acs.orglett.9b03038

  日期：2019.10.18

  We have developed a new type of n-pentenyl-type glycosides that can be activated by catalytic amounts of promoter, Hg(NTf2)2 or PPh3AuCl/AgNTf2, at room temperature. The mild activation conditions and outstanding stability of common protection/deprotection manipulations enable the enynyl donors to have broad applications in constructing various glycosidic bonds. Furthermore, under the Hg(NTf2)2-catalyzed

  我们已经开发出一种新型的正戊烯基型糖苷，可以在室温下通过催化量的启动子Hg（NTf 2）2或PPh 3 AuCl / AgNTf 2进行活化。普通保护/去保护操作的温和活化条件和出色的稳定性使烯丙基供体在构建各种糖苷键方面具有广泛的应用。此外，在Hg（NTf 2）2催化的条件下，实现了不同类型供体的顺序活化，在此基础上，通过新开发的单催化剂一锅法合成了龙胆四糖。
• Fluorophore-Appended Steroidal Saponin (Dioscin and Polyphyllin D) Derivatives
  作者：Zhiqi Yang、Ella Lai-Ming Wong、Tina Yuen-Ting Shum、Chi-Ming Che、Yongzheng Hui

  DOI：10.1021/ol0475616

  日期：2005.2.1

  The synthesis of three fluorophore-appended derivatives of dioscin and polyphyllin D is reported herein. Starting from trillin, dansyl derivatives A-C were prepared in overall yields of 7-12% over 7-10 steps. A study of their behavior in a variety of polar solvents suggests that dansyl derivatives A-C are capable of micellar self-assembly and can maintain cytotoxicities (IC50 = 15-18 muM) against the HeLa carcinoma cell line evaluated by standard MTT assay.
• 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.