allyl 2-acetamido-2-deoxy-4,6-di-O-pivaloyl-α-D-galactopyranoside | 527687-38-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: allyl 2-acetamido-2-deoxy-4,6-di-O-pivaloyl-α-D-galactopyranoside
• 英文别名: 1-allyl-2-N-acetyl-2-deoxy-4,6-pivaloylgalactose；pivaloyl(-4)[pivaloyl(-6)]GalNAc(a)-O-allyl；[(2R,3R,4R,5R,6S)-5-acetamido-3-(2,2-dimethylpropanoyloxy)-4-hydroxy-6-prop-2-enoxyoxan-2-yl]methyl 2,2-dimethylpropanoate
• CAS: 527687-38-3
• 化学式: C₂₁H₃₅NO₈
• 分子量: 429.511
• InChiKey: CLXRGNJBKRTLCT-MTSZKFMLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  30
• 可旋转键数：
  11
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.76
• 拓扑面积：
  120
• 氢给体数：
  2
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  allyl 2-acetamido-2-deoxy-4,6-di-O-pivaloyl-α-D-galactopyranoside 在 三氟化硼乙醚 、 sodium methylate 作用下， 以 甲醇 、 正己烷 、 二氯甲烷 为溶剂， 反应 54.0h， 生成 allyl 2-acetamido-2-deoxy-3-O-(β-D-galactopyranosyl)-α-D-galactopyranoside
  参考文献：
  名称：

  多价GM1模拟物的合成及其霍乱毒素结合特性。

  摘要：

  基于3,5-二-（2-氨基乙氧基）-苯甲酸分支单元的树枝状大分子用于附着多个副本的GM1模拟物，以抑制霍乱毒素的结合。合成了高达八价的体系以及相关的参考化合物，在一种情况下，该参考化合物包含一价形式的配体，在另一种情况下包含支架但不包含配体。使用表面等离振子共振抑制测定法，所制备的抑制剂表现出良好的抑制作用。虽然单价GM1模拟物显示了200 microM范围内的预期抑制作用，但多价支架却导致结合增加。已显示该四价化合物的效力比其一价对应物高440倍。然而，八价类似物是用ELISA测定法测定的最有效的化合物。

  DOI：

  10.1039/b405344c
• 作为产物：
  描述：

  D-GlcNAc 在 吡啶 、 三氟甲磺酸酐 、 乙酰氯 作用下， 以 二氯甲烷 为溶剂， 反应 20.0h， 生成 allyl 2-acetamido-2-deoxy-4,6-di-O-pivaloyl-α-D-galactopyranoside
  参考文献：
  名称：

  多价GM1模拟物的合成及其霍乱毒素结合特性。

  摘要：

  基于3,5-二-（2-氨基乙氧基）-苯甲酸分支单元的树枝状大分子用于附着多个副本的GM1模拟物，以抑制霍乱毒素的结合。合成了高达八价的体系以及相关的参考化合物，在一种情况下，该参考化合物包含一价形式的配体，在另一种情况下包含支架但不包含配体。使用表面等离振子共振抑制测定法，所制备的抑制剂表现出良好的抑制作用。虽然单价GM1模拟物显示了200 microM范围内的预期抑制作用，但多价支架却导致结合增加。已显示该四价化合物的效力比其一价对应物高440倍。然而，八价类似物是用ELISA测定法测定的最有效的化合物。

  DOI：

  10.1039/b405344c

文献信息

• Glycomimetic Ligands for the Human Asialoglycoprotein Receptor
  作者：Sreeman K. Mamidyala、Sanjay Dutta、Boris A. Chrunyk、Cathy Préville、Hong Wang、Jane M. Withka、Alexander McColl、Timothy A. Subashi、Steven J. Hawrylik、Matthew C. Griffor、Sung Kim、Jeffrey A. Pfefferkorn、David A. Price、Elnaz Menhaji-Klotz、Vincent Mascitti、M.G. Finn

  DOI：10.1021/ja2104679

  日期：2012.2.1

  The asialoglycoprotein receptor (ASGPR) is a high-capacity galactose-binding receptor expressed on hepatocytes that binds its native substrates with low affinity. More potent ligands are of interest for hepatic delivery of therapeutic agents. We report several classes of galactosyl analogues with varied substitution at the anomeric, C2-, C5-, and C6-positions. Significant increases in binding affinity were noted for several trifluoromethyl-acetamide derivatives without covalent attachment to the protein. A variety of new ligands were obtained with affinity for ASGPR as good as or better than that of the parent N-acetylgalactosamine, showing that modification on either side of the key C3,C4-diol moiety is well tolerated, consistent with previous models of a shallow binding pocket. The galactosyl pyranose motif therefore offers many opportunities for the attachment of other functional units or payloads while retaining low-micromolar or better affinity for the ASGPR.
• Synthesis of neoglycoproteins containing O-methylated trisaccharides related to excretory/secretory antigens of Toxocara larvae
  作者：Hassan Amer、Andreas Hofinger、Paul Kosma

  DOI：10.1016/s0008-6215(02)00355-5

  日期：2003.1

  The disaccharides allyl beta-D-galactopyranosyl-(1 --> 3)-2-acetamido-2-deoxy-beta- and alpha-D-galactopyranoside 10a and 10b and the trisaccharides allyl 2-O-methyl-alpha-L-fucopyranosyl-(1 --> 2)-beta-D-galactopyranosyl-(1--> 3)-2-acetamido-2-deoxy-beta- and alpha-D-galactopyranoside 18a and 18b have been prepared using stepwise assembly of the sugar units. The glycosidic linkages were formed employing the trichloroacetimidate procedure for the attachment of the galactopyranosyl residue and N-iodosuccinimide/triflic acid activation of an ethyl 1-thiofucopyranoside donor for fucosylation. Deprotection furnished the allyl glycosides which were converted into cysteamine-spacered ligands, activated with thiophosgene and subsequently linked to bovine serum albumin. The neoglycoproteins serve as immunoreagents to determine epitope specificities of monoclonal antibodies directed against highly immunogenic O-glycans located at the surface of Toxocara larvae. (C) 2002 Elsevier Science Ltd. All rights reserved.
• Synthesis and cholera toxin binding properties of multivalent GM1 mimicsElectronic supplementary information (ESI) available: characterization of the polyvalent compounds ? imide by-products. See http://www.rsc.org/suppdata/ob/b4/b405344c/
  作者：Daniela Arosio、Ioannis Vrasidas、Paola Valentini、Rob M. J. Liskamp、Roland J. Pieters、Anna Bernardi

  DOI：10.1039/b405344c

  日期：——

  inhibition assay the prepared inhibitors showed good inhibition. While the monovalent GM1 mimic showed the expected inhibition in the 200 microM range the multivalent scaffolds led to increased binding. The tetravalent compound was shown to be 440-fold more potent than its monovalent counterpart. The octavalent analog, however, was the most potent compound as determined using an ELISA assay.

  基于3,5-二-（2-氨基乙氧基）-苯甲酸分支单元的树枝状大分子用于附着多个副本的GM1模拟物，以抑制霍乱毒素的结合。合成了高达八价的体系以及相关的参考化合物，在一种情况下，该参考化合物包含一价形式的配体，在另一种情况下包含支架但不包含配体。使用表面等离振子共振抑制测定法，所制备的抑制剂表现出良好的抑制作用。虽然单价GM1模拟物显示了200 microM范围内的预期抑制作用，但多价支架却导致结合增加。已显示该四价化合物的效力比其一价对应物高440倍。然而，八价类似物是用ELISA测定法测定的最有效的化合物。