2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-α-D-glucopyranosyl trichloroacetimidate | 773145-61-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-α-D-glucopyranosyl trichloroacetimidate
• 英文别名: 2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1→4)-2,3,6-tri-O-benzoyl-α-D-glucopyranosyl trichloroacetimidate；I+/--D-Glucopyranose, 4-O-(2,3,4,6-tetra-O-benzoyl-I(2)-D-glucopyranosyl)-, 2,3,6-tribenzoate 1-(2,2,2-trichloroethanimidate)；[(2R,3R,4S,5R,6R)-4,5-dibenzoyloxy-3-[(2S,3R,4S,5R,6R)-3,4,5-tribenzoyloxy-6-(benzoyloxymethyl)oxan-2-yl]oxy-6-(2,2,2-trichloroethanimidoyl)oxyoxan-2-yl]methyl benzoate
• CAS: 773145-61-2
• 化学式: C₆₃H₅₀Cl₃NO₁₈
• 分子量: 1215.44
• InChiKey: HUCNKFYJQPVDLI-JNHXGUCISA-N

物化性质

• 密度：
  1.40±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  12.9
• 重原子数：
  85
• 可旋转键数：
  27
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  245
• 氢给体数：
  1
• 氢受体数：
  19

反应信息

• 作为反应物：
  描述：

  剑麻皂素 、 2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-α-D-glucopyranosyl trichloroacetimidate 在 三氟甲磺酸三甲基硅酯 作用下， 以 二氯甲烷 为溶剂， 反应 4.0h， 以61%的产率得到3-O-[2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1-->4)-2,3,6-tri-O-benzoyl-β-D-glucopyranosyl]tigogenin
  参考文献：
  名称：

  Antifungal activity of 2α,3β-functionalized steroids stereoselectively increases with the addition of oligosaccharides

  摘要：

  Invasive fungal infections pose a significant problem to the immune-compromised. Moreover, increased resistance to common antifungals requires development of novel compounds that can be used to treat invasive fungal infections. Naturally occurring steroidal glycosides have been shown to possess a range of functional antimicrobial properties, but synthetic methodology for their development hinders thorough exploration of this class of molecules and the structural components required for broad spectrum antifungal activity. In this report, we outline a novel approach to the synthesis of glycoside-linked functionalized 2 alpha,3 beta-cholestane and spirostane molecules and present data from in vitro screenings of the antifungal activities against human fungal pathogens and as well as mammalian cell toxicity of these derivatives. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.10.015
• 作为产物：
  描述：

  Cellobiose octabenzoat 在 氢溴酸 、 溶剂黄146 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 silver carbonate 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 96.0h， 生成 2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-α-D-glucopyranosyl trichloroacetimidate
  参考文献：
  名称：

  Synthesis and Hemolytic Activity of Some Hederagenin Diglycosides

  摘要：

  使用六种商业化双糖（D-细胞二糖、D-乳糖、D-麦芽糖、D-梅里糖、D-金雀异二糖、D-异麦芽糖）的三氯乙酰胺衍生物对苦木苷进行糖苷化反应，得到了高产率的保护皂苷。去保护后得到的皂苷进一步转化为相应的甲基酯。这些合成的苦木苷双糖的溶血活性被测量，以根据附加糖的类型和序列建立游离羧酸和甲基酯皂苷的结构–活性关系。

  DOI：

  10.1248/cpb.52.965

文献信息

• CARBOHYDRATE CONJUGATES AS DELIVERY AGENTS FOR OLIGONUCLEOTIDES
  申请人：Alnylam Pharmaceuticals, Inc.

  公开号：US20160051691A1

  公开（公告）日：2016-02-25

  The present invention provides iRNA agents comprising at least one subunit of the formula (I): wherein: A and B are each independently for each occurrence O, N(R N ) or S; X and Y are each independently for each occurrence H, OH, a hydroxyl protecting group, a phosphate group, a phosphodiester group, an activated phosphate group, an activated phosphite group, a phosphoramidite, a solid support, —P(Z′)(Z″)O-nucleoside, —P(Z′)(Z″)O-oligonucleotide, a lipid, a PEG, a steroid, a lipophile, a polymer, —P(Z′)(Z″)O-Linker-OP(Z′″)(Z″″)O-oligonucleotide, a nucleotide, an oligonucleotide, —P(Z′)(Z″)-formula(I), —P(Z′)(Z″)— or -Linker-R; R is L G , -Linker-L G , or has the structure shown below: L G is independently for each occurrence a carbohydrate, e.g., monosaccharide, disaccharide, trisaccharide, tetrasaccharide, oligosaccharide, polysaccharide; R N is independently for each occurrence H, methyl, ethyl, propyl, isopropyl, butyl, or benzyl; and Z′, Z″, Z′″ and Z″″ are each independently for each occurrence O or S.

  本发明提供了包含至少一个式(I)的亚单位的iRNA试剂： 其中： A和B分别独立于每次出现O、N(RN)或S； X和Y分别独立于每次出现H、OH、一个羟基保护基团、一个磷酸基团、一个磷酸二酯基团、一个活化磷酸基团、一个活化亚磷酸基团、一个磷酰胺基团、一个固相支持、-P(Z')(Z″)O-核苷、-P(Z')(Z″)O-寡核苷酸、一个脂质、一个PEG、一个类固醇、一个亲脂物质、一个聚合物、-P(Z')(Z″)O-连接子-OP(Z′″)(Z″″)O-寡核苷酸、一个核苷酸、一个寡核苷酸、-P(Z')(Z″)-式(I)、-P(Z')(Z″)-或-连接子-R； R是LG、-连接子-LG，或具有下面所示结构： LG独立于每次出现的是一种碳水化合物，例如，单糖、双糖、三糖、四糖、寡糖、多糖； RN独立于每次出现的是H、甲基、乙基、丙基、异丙基、丁基或苄基； Z'、Z″、Z′″和Z″″分别独立于每次出现的是O或S。
• Synthesis and Evaluation of a Series of Oleanolic Acid Saponins as α-Glucosidase and α-Amylase Inhibitors
  作者：Tiantian Guo、Shaoping Wu、Sen Guo、Lu Bai、Qingchao Liu、Naisheng Bai

  DOI：10.1002/ardp.201500179

  日期：2015.9

  Sixteen naturally occurring oleanolic acid saponins and their derivatives were synthesized in an efficient and practical strategy, and their inhibitory activities against α‐glucosidase and α‐amylase were evaluated in vitro. Among all the compounds, 28‐O‐monoglucoside 8 exhibited remarkably potent inhibitory activity against α‐glucosidase with an IC50 value of 87.3 µM, which was fivefold stronger than

  以一种有效且实用的策略合成了 16 种天然存在的齐墩果酸皂苷及其衍生物，并在体外评估了它们对 α-葡萄糖苷酶和 α-淀粉酶的抑制活性。在所有化合物中，28-O-单糖苷 8 对 α-葡萄糖苷酶表现出显着的抑制活性，IC50 值为 87.3 µM，是抗糖尿病阿卡波糖的 5 倍。根据初步的构效关系，对于 28-O-单糖苷，末端 α-l-吡喃鼠李糖残基的存在增强了 α-葡萄糖苷酶和 α-淀粉酶的抑制活性。此外，对于 3,28-O-bidesmosides，
• A sequential one-pot strategy for the synthesis of triterpenoid saponins in ionic liquid [emim][OTf]
  作者：Yiming Song、Tiantian Guo、Qingchao Liu、Weiguo Song、Fahui Li

  DOI：10.1177/1747519819831866

  日期：2019.1

  1-Ethyl-3-methylimidazolium trifluoromethanesulfonate ([emim][OTf]) is an efficient co-solvent and co-promoter for one-pot sequential glycosylation with the combined use of thioglycosides and trichloroacetimidates (or N-phenyltrifluoroacetimidates) donors at room temperature. One-pot glycosylation is efficient for the synthesis of triterpenoid saponins with the combined use of N-phenyltrifluoroacetimidate donors and 2-methyl-5-tert-butylphenyl (Mbp) thioglycoside donors in [emim][OTf].

  1-乙基-3-甲基咪唑三氟甲磺酸盐([emim][OTf])是一种高效的共溶剂和共催化剂，可与硫代糖苷和三氯乙酰亚胺酯(或N-苯基三氟乙酰亚胺酯)供体在室温下进行一锅式顺序糖基化反应。一锅式糖基化反应对于合成三萜皂苷是高效的，可通过在[emim][OTf]中同时使用N-苯基三氟乙酰亚胺酯供体和2-甲基-5-叔丁基苯基(Mbp)硫代糖苷供体来实现。
• Synthesis and antitumor activities of naturally occurring oleanolic acid triterpenoid saponins and their derivatives
  作者：Qingchao Liu、Hongchun Liu、Lei Zhang、Tiantian Guo、Peng Wang、Meiyu Geng、Yingxia Li

  DOI：10.1016/j.ejmech.2013.04.016

  日期：2013.6

  Twenty-six naturally occurring oleanolic acid saponins and their derivatives, 16 of which were synthesized in this study, were preliminarily evaluated against human cancer cells. From SAR studies, the presence of alpha-L-rhamnosyl residue at the terminal of both C-3 and C-28 position for oleanolic acid bidesmosides was important to enhance cytotoxicity, and introducing more sugar residues at C-3-OH of compound 12 with C-28 carboxylic acid is a favorable modification to ameliorate the anticancer activity. Furthermore, alpha-L-rhamnosyl moiety linked to C-2-OH of the first monosaccharide (alpha-L-alabinose, beta-D-xylose, beta-n-galactose or beta-D-glucose) in C-3-OH of oleanolic acid was helpful to improve the cytotoxicity. According to the predicted log P values, lipophilicity of the synthesized saponins was not an important factor for cytotoxicity. (C) 2013 Elsevier Masson SAS. All rights reserved.
• Facile synthesis of three bidesmosidic oleanolic acid saponins with strong inhibitory activity on pancreatic lipase
  作者：Tiantian Guo、Qingchao Liu、Peng Wang、Lei Zhang、Wei Zhang、Yingxia Li

  DOI：10.1016/j.carres.2009.04.024

  日期：2009.7

  The first synthesis of scabiosaponins E (1), F (2), and G (3), three new oleanolic acid saponins with strong inhibitory activity on pancreatic lipase isolated from the Chinese traditional medicinal herb Scabiosa tschiliensis, was efficiently achieved in an one-pot strategy under the combined use of glycosyl trichloro-acetimidates and p-toluene 1-thioglycosides (STol) as donors. (C) 2009 Published by Elsevier Ltd.