methyl (methyl 5-acetamido-3,5-dideoxy-2-thio-D-glycero-α-D-galacto-2-nonulopyranosid)onate | 130333-20-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl (methyl 5-acetamido-3,5-dideoxy-2-thio-D-glycero-α-D-galacto-2-nonulopyranosid)onate
• 英文别名: methyl 5-acetamido-3,5-dideoxy-2-thio-α-D-glycero-D-galacto-2-nonulopyranosonate；methyl (2S,4S,5R,6R)-5-acetamido-4-hydroxy-2-methylsulfanyl-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylate
• CAS: 130333-20-9
• 化学式: C₁₃H₂₃NO₈S
• 分子量: 353.394
• InChiKey: OXDLUEPFVYVVTK-GRRZBWEESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.8
• 重原子数：
  23
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.85
• 拓扑面积：
  171
• 氢给体数：
  5
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  methyl (methyl 5-acetamido-3,5-dideoxy-2-thio-D-glycero-α-D-galacto-2-nonulopyranosid)onate 在 barium dihydroxide 作用下， 反应 15.0h， 以85%的产率得到methyl 5-amino-3,5-dideoxy-2-thio-D-glycero-α-D-galacto-2-nonulopyranosidonic acid
  参考文献：
  名称：

  Studies on Sialic Acids. XXX. Synthesis of 2,7-Anhydrosialic Acid.

  摘要：

  以 5-acetamido-3, 5-dideoxy-2-thio-α-D-glycero-D-galacto-2-nonulopyranosonate 甲酯为原料，高产率合成了 N-乙酰基-和 N-乙醇酰基-2, 7-脱水神经氨酸。通过 1H-NMR 谱和 X 射线晶体分析阐明了这些聚糖唾液酸的结构和立体化学。 N-乙酰基-和N-乙醇酰-2, 7-脱水神经氨酸（1和10）的环系统被确定具有相同的2C5(D)构象。

  DOI：

  10.1248/cpb.40.3197
• 作为产物：
  描述：

  甲基4,7,8,9-四-O-乙酰基-2-硫代-N-乙酰基-alpha-D-神经氨酸甲酯 在 甲醇 、 sodium methylate 作用下， 反应 2.0h， 以61%的产率得到methyl (methyl 5-acetamido-3,5-dideoxy-2-thio-D-glycero-α-D-galacto-2-nonulopyranosid)onate
  参考文献：
  名称：

  Low Molecular Weight Antagonists of the Myelin-Associated Glycoprotein: Synthesis, Docking, and Biological Evaluation

  摘要：

  The Injured adult mammalian central nervous system Is all inhibitory environment for axon regeneration due to specific inhibitors,among them the myelin-associated glycoprotein (MAG), a member of the Siglec family (sialic-acid binding immunoglobulin-like lectin). In earlier Studies, we identified the lead structure5, which shows a 250-fold improved in vitro affinity for MAG compared to the tetrasaccharide binding epitope of GQ1b alpha (1), the best physiological MAG ligand described so far. By modifying the 2- and 5-position, the affinity of 5 could be further improved to the nanomolar range (-> 19a). Docking Studies to a homology model of MAG allowed the rationalization of the experimental binding properties. Finally, pharmacokinetic parameters (stability in the cerebrospinal fluid, logD and Permeation through the BBB) indicate the drug-like properties of the high-affinity antagonist 19a.

  DOI：

  10.1021/jm901517k

文献信息

• A Fragment-Based In Situ Combinatorial Approach To Identify High-Affinity Ligands for Unknown Binding Sites
  作者：Sachin V. Shelke、Brian Cutting、Xiaohua Jiang、Hendrik Koliwer-Brandl、Daniel S. Strasser、Oliver Schwardt、Soerge Kelm、Beat Ernst

  DOI：10.1002/anie.200907254

  日期：——

  the lead: The title method for the identification of ligands is particularly useful for binding sites where little or no structural information is available. In a fragment‐based approach, a suitable pair of first‐ and second‐site ligands is identified by NMR experiments. By applying a receptor‐mediated in situ combinatorial approach, the two ligands are then linked to generate a new high‐affinity lead

  潜在客户：鉴定配体的标题方法特别适用于很少或没有结构信息的结合位点。在基于片段的方法中，通过NMR实验确定了合适的一对第一位和第二位配体。通过应用受体介导的原位组合方法，然后将两个配体连接起来以生成新的高亲和力铅结构（参见图片）。
• Synthesis of an S-(α-sialosyl)-(2→9)-O-(α-sialosyl)-(2→3′)-β-lactosylceramide
  作者：Akira Hasegawa、Hirotsugu Ogawa、Hideharu Ishida、Makoto Kiso

  DOI：10.1016/0008-6215(92)84103-y

  日期：1992.2

  Neu5Ac residue in the ganglioside GM3 structure. Glycosylation of 2-(trimethylsilyl)ethyl O-(6-O-benzoyl-beta-D-galactopyranosyl)-(1----4)-2,6-di-O-benzoyl-beta-D -glucopyranoside with methyl (methyl 5-acetamido-4,7,8-tri-O-acetyl-9-bromo-3,5,9-trideoxy-D-glycero-alpha-D- galacto-2-nonulopyranosid)onate, which was prepared from methyl (methyl 5-acetamido-3,5-dideoxy-D-glycero-alpha-D-galacto-2- nonulopyranosid)onate

  已经合成了神经节苷脂GD3类似物，其具有与神经节苷脂GM3结构中的Neu5Ac残基的C-9连接的N-乙酰神经氨酸（Neu5Ac）残基α-硫糖苷。O-（6-O-苯甲酰基-β-D-吡喃半乳糖基）-（1 ---- 4）-2,6-二-O-苯甲酰基-β-D-吡喃葡萄糖苷的2-（三甲基甲硅烷基）乙基糖基与甲基（5-5-乙酰氨基-4,7,8-三-O-乙酰基-9-溴-3,5,9-苯氧基氧基-D-甘油-α-D-半乳糖-2-壬基吡喃糖苷） （8,9-O-异丙基亚甲基化，O-乙酰化，异亚丙基基团的水解，选择性溴化，5-乙酰氨基-3,5-二脱氧-D-甘油-α-D-半乳糖-2-壬基吡喃甲基）甲基酸酯然后使用三氟甲磺酸二甲基（甲硫基）ulf（DMTST）作为促进剂进行O-乙酰化反应，得到α-唾液酰-（2 ---- 3'）-乳糖苷8。8的O-乙酰基衍生物与5-乙酰氨基-4,7,8,9-四-O-乙酰基-3,5-二脱氧-2
• Investigation of protecting group for sialic acid carboxy moiety toward sialylglycopeptide synthesis by the TFA-labile protection strategy
  作者：Shun Ito、Yuya Asahina、Hironobu Hojo

  DOI：10.1016/j.tet.2021.132423

  日期：2021.9

  6-dimethylbenzyl (DMBn) ester at C-1 carboxy group rapidly proceeded with good α-selectivity to yield sialyl-N-acetylgalactosaminylated 9-fluorenylmethoxycarbonyl (Fmoc) serine unit. The unit was used for the solid-phase peptide synthesis (SPPS) of the sialyl glycopeptide. The DMBn group was removed during the final deprotection by the trifluoroacetic acid (TFA) treatment keeping the sialyl bond intact

  使用唾液酸供体与 C-1 羧基上的 2,6-二甲基苄基 (DMBn) 酯的唾液酸化迅速进行，具有良好的 α-选择性，产生唾液酸-N-乙酰半乳糖胺化 9-芴基甲氧基羰基 (Fmoc) 丝氨酸单元。该装置用于唾液酸糖肽的固相肽合成 (SPPS)。DMBn 基团在最后的脱保护过程中被三氟乙酸 (TFA) 处理去除，保持唾液酸键完整，并成功获得所需的唾液酸糖肽。这种保护基团策略为唾液酸糖肽合成提供了更容易获得唾液酸糖氨基酸的途径。
• Studies on Sialic Acids. XXX. Synthesis of 2,7-Anhydrosialic Acid.
  作者：Kimio FURUHATA、Haruo OGURA

  DOI：10.1248/cpb.40.3197

  日期：——

  N-Acetyl-and N-glycolyl-2, 7-anhydroneuraminic acid were synthesized from methyl 5-acetamido-3, 5-dideoxy-2-thio-α-D-glycero-D-galacto-2-nonulopyranosonate in high yield. The structures and stereochemistry of these glycosanic sialic acids were elucidated from 1H-NMR spectra and X-ray crystal analysis. The ring systems of N-acetyl- and N-glycolyl-2, 7-anhydroneuraminic acid (1 and 10) were determined to have the same 2C5(D) conformation.

  以 5-acetamido-3, 5-dideoxy-2-thio-α-D-glycero-D-galacto-2-nonulopyranosonate 甲酯为原料，高产率合成了 N-乙酰基-和 N-乙醇酰基-2, 7-脱水神经氨酸。通过 1H-NMR 谱和 X 射线晶体分析阐明了这些聚糖唾液酸的结构和立体化学。 N-乙酰基-和N-乙醇酰-2, 7-脱水神经氨酸（1和10）的环系统被确定具有相同的2C5(D)构象。
• CST-II’s recognition domain for acceptor substrates in α-(2→8)-sialylations
  作者：Wenling Li、Ping Zhang、Amir J. Zuccolo、Ruxiang Blake Zheng、Chang-Chun Ling

  DOI：10.1016/j.carres.2011.05.009

  日期：2011.9

  CST-II is a bacterial sialyltransferase known for its ability to perform alpha-(2 -> 8)-sialylations using GM(3) related trisaccharide substrates. Previously, we probed the enzyme's substrate specificity and developed an efficient synthesis for alpha-(2 -> 8)-oligosialosides, and we suggested that CST-II could have a very small substrate recognition domain. Here we report our full studies on CST-II's recognition feature for acceptor substrates. The current study further demonstrates the versatility of CST-II in preparing complex oligosaccharides that contain alpha-(2 -> 8)-oligosialyl moieties. (C) 2011 Elsevier Ltd. All rights reserved.