2,3,4,6-tetra-O-benzoyl-D-glucopyranosyl trichloroacetimidate | 149707-75-5

• 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: 2,3,4,6-tetra-O-benzoyl-D-glucopyranosyl trichloroacetimidate
• 英文别名: 2,3,4,6-Tetra-O-benzoyl-α-D-glucopyranosyl trichloroacetimidate；2,2,2-trichloroacetimidate 2,3,4,6-tetra-O-benzoyl-α-d-glucopyranoside；2,3,4,6-Tetra-O-benzoyl-alpha-D-glucopyranosyl trichloroacetimidate；[(2R,3R,4S,5R,6R)-3,4,5-tribenzoyloxy-6-(2,2,2-trichloroethanimidoyl)oxyoxan-2-yl]methyl benzoate
• CAS: 149707-75-5
• 化学式: C₃₆H₂₈Cl₃NO₁₀
• 分子量: 740.978
• InChiKey: KTHFOWIANASXOK-UCDCFHRCSA-N

物化性质

• 沸点：
  758.7±70.0 °C(Predicted)
• 密度：
  1.40±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  9.2
• 重原子数：
  50
• 可旋转键数：
  15
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  148
• 氢给体数：
  1
• 氢受体数：
  11

安全信息

• 储存条件：
  室温

反应信息

• 作为反应物：
  描述：

  2,3,4,6-tetra-O-benzoyl-D-glucopyranosyl trichloroacetimidate 在 甲醇 、 sodium methylate 作用下， 以 二氯甲烷 为溶剂， 反应 5.0h， 生成 tigogenin 3β-O-(β-D-glucopyranoside)
  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：

  a-无水葡萄糖酯 在 吡啶 、 氢溴酸 、 caesium carbonate 、 溶剂黄146 作用下， 以 二氯甲烷 为溶剂， 反应 28.0h， 生成 2,3,4,6-tetra-O-benzoyl-D-glucopyranosyl trichloroacetimidate
  参考文献：
  名称：

  Mitochondrial Affinity of Guanidine-rich Molecular Transporters Built on Monosaccharide Scaffolds: Stereochemistry and Lipophilicity

  摘要：

  我们合成了八种基于四种不同单糖支架的G8分子转运体（MTs），并研究了它们的生物特性，特别关注可能的线粒体靶向性和组织选择性。这些MT的线粒体亲和力明显与支架的立体化学相关，也与疏水性有一定联系。可以建议，在针对大脑和线粒体疾病的药物实际递送策略中，应将血脑屏障渗透性和线粒体亲和力视为关键参数，并且通过进一步研究富含胍的分子转运体的结构—性质关系，增强线粒体亲和力是可行的。

  DOI：

  10.5012/bkcs.2011.32.7.2286

文献信息

• Concise synthesis of a new triterpenoid saponin from the roots of Gypsophila oldhamiana and its derivatives as α-glucosidase inhibitors
  作者：Qingchao Liu、Tiantian Guo、Fahui Li、Dong Li

  DOI：10.1039/c6nj01602b

  日期：——

  The first synthesis of the triterpenoid saponin 1 and its derivatives 2–3 was efficiently achieved in an efficient and practical strategy with an odourless 2-methyl-5-tert-butylphenyl (Mbp) thioglycoside and a N-phenyltrifluoroacetimidate donor as a key step, and their inhibitory activities against α-glucosidase and α-amylase were evaluated in vitro. The preliminary structure–activity relationship

  以无味的2-甲基-5-叔丁基苯基（Mbp）硫代糖苷和N-苯基三氟乙酰亚氨酸酯供体为关键步骤，有效而有效地实现了三萜皂苷1及其衍生物2-3的首次合成，和它们对α葡糖苷酶和α淀粉酶抑制活性进行评价体外。初步的结构-活性关系研究表明，C4-CHO和C4-CH 2 OH对α-葡萄糖苷酶抑制活性不是必需的。在这三种化合物中，化合物3表现出对α-葡萄糖苷酶的显着抑制活性，IC 50为值为9.17μM。根据Dixon图上的截距确定为9.35μM的K i，抗α-葡萄糖苷酶的更强皂苷3可能是非竞争性抑制模式。同时，计算化合物1-3的亲脂性，作为药理效力的预测。根据预测的log  P值，亲脂性可能与评估的生物学潜能相关。
• Two 3′-<i>O</i>-β-glucosylated nucleoside fluorometabolites related to nucleocidin in <i>Streptomyces calvus</i>
  作者：Xuan Feng、Davide Bello、Phillip T. Lowe、Joshua Clark、David O'Hagan

  DOI：10.1039/c9sc03374b

  日期：——

  4'-fluoro-3'-O-β-glucosylated metabolites (F-Mets I and II) which appear and then disappear before nucleocidin production in batch cultures of S. calvus. Full genome sequencing of S. calvus T-3018 and an analysis of the putative biosynthetic gene cluster for nucleocidin identified UDP-glucose dependent glucosyl transferase (nucGT) and glucosidase (nucGS) genes within the cluster. We demonstrate that these genes express

  抗生素核苷是土壤细菌小链霉菌T-3018的产物。它是非常罕见的含氟天然产物之一，但与其他含氟代谢产物不同，因为它不是通过氟化酶由5'-氟脱氧腺苷生物合成的。它似乎具有独特的酶促氟化过程。我们在这里公开了两个4'-氟-3'-O-β-葡萄糖基化代谢产物（F-大都会I和II）的结构，它们在小牛链球菌的分批培养中生产核苷类药物之前先出现然后消失。小牛伤寒沙门氏菌T-3018的全基因组测序和推定的生物合成基因簇的分析，以鉴定核苷为UDP-葡萄糖依赖性葡萄糖基转移酶（nucGT）和葡萄糖苷酶（nucGS）基因。我们证明，这些基因表达的酶具有从腺苷类似物的3'-O-位上附着和去除葡萄糖的能力。在F-Met II的情况下，用NucGS葡糖苷酶进行的去糖基化反应会生成核苷，暗示其在生物合成中的作用。nucGT的基因敲除废除了核糖蛋白的生产。
• Synthesis of phalluside-1 and Sch II using 1,2-metallate rearrangements
  作者：Fiona J. Black、Philip J. Kocienski

  DOI：10.1039/b920285d

  日期：——

  (4E,8E,10E)-9-Methyl-4,8,10-sphingatrienine, a core component of marine sphingolipids, was synthesised for the first time using a copper(I)-mediated 1,2-metallate rearrangement of a lithiated glycal as a key step. It was converted to phalluside-1, a cerebroside isolated from the ascidian Phallusia fumigate. By an analogous route, (4E,8E)-9-methyl-4,8-sphingadiene was synthesised and converted to Sch II, a cerebroside that induces fruiting body formation in the basidiomycete Schizophyllum commune.

  (4E,8E,10E)-9-甲基-4,8,10-斯潘加三烯是一种海洋鞘脂类的核心成分，首次通过铜(I)催化的1,2-金属重排反应合成了锂化的甘蓝作为关键步骤。将其转化为phalluside-1，这是一种从海鞘Phallusia fumigate中分离出的脑苷脂。通过类似的路径，合成了(4E,8E)-9-甲基-4,8-斯潘加二烯，并将其转化为Sch II，这是一种能诱导担子菌Schizophyllum commune形成子实体的脑苷脂。
• Regio/Stereoselective Glycosylation of Diol and Polyol Acceptors in Efficient Synthesis of Neu5Ac-α-2,3-LacNPhth Trisaccharide
  作者：Ying Zhang、Fu-Long Zhao、Tao Luo、Zhichao Pei、Hai Dong

  DOI：10.1002/asia.201801486

  日期：2019.1.4

  was developed. First, the regio/stereoselective glycosylation between glycoside donors and glucoNPhth diol acceptors was investigated. It was found that the regioselectivity depends not only on the steric hindrance of the C2‐NPhth group and the C6‐OH protecting group of the glucosamine acceptors, but also on the leaving group and protecting group of the glycoside donors. Under optimized conditions, LacNPhth

  开发了Neu5Ac-α-2,3-LacNPhth三糖衍生物的简便方法。首先，研究了糖苷供体和葡萄糖NPhth二醇受体之间的区域/立体选择性糖基化。发现区域选择性不仅取决于葡糖胺受体的C2-NPhth基团和C6-OH保护基的空间位阻，还取决于糖苷供体的离去基团和保护基。在优化条件下，LacNPhth衍生物在高达92％的产率通过全乙酰-α-D-吡喃半乳糖三氯之间的区域选择性/立体选择性糖基化合成p -甲氧基苯基6- ö -叔-butyldiphenylsilyl -2-脱氧-2-苯二甲酰亚-β- d-吡喃葡萄糖苷，避免形成糖基化原酸酯和异头糖苷配基。然后，将LacNPhth衍生物脱酰基，然后通过TBDPS保护在伯位置上，以形成LacNPhth多元醇受体。最后，通过LacNPhth多元醇受体与亚磷酸唾液酸基酯供体之间的区域/立体选择性糖基化反应，以48％的产率合成了Neu5Ac-α-2,3-La
• An expeditious route to the synthesis of kelampayosides A and B
  作者：Howard I. Duynstee、Martijn C. de Koning、Gijs A. van der Marel、Jacques H. van Boom

  DOI：10.1016/s0040-4020(99)00527-x

  日期：1999.8

  Chemoselective NIS/ cat. TfOH-mediated glycosylation of ethyl2,3,4-tri-O-benzoyl-1-thio-β-d-glucopyranoside (13) with ethyl2,3-di-O-acetyl-5-O-benzyl-1-thio-αβ-d-erythro-apiofuranoside (4a) gave dimer14 in an excellent yield. BF3•Et2O-catalysed condensation of the α-trichloroacetimidate31, accessible in two steps from14, with 3,4,5-trimethoxyphenol gave β-linked derivative32 followed by deprotection

  化学选择性NIS /猫。TfOH介导的乙基2,3,4-三-O-苯甲酰基-1-硫代-β-d-吡喃葡萄糖苷（13）与乙基2,3-二-O-乙酰基-5-O-苄基-1-硫代-的糖基化作用αβ-d-赤型-呋喃呋喃糖苷（4a）以优异的产率得到二聚体14。BF 3 •Et 2 O催化的α-三氯乙酰亚胺酸酯31的缩合反应（从14步可分两个步骤进行）与3,4,5-三甲氧基苯酚生成β-连接的衍生物32，然后脱保护得到KelampayosideA。保护基的操作为32和所得的后续caffeoylation 36接着进行脱保护，得到Kelampayoside B.图选项