ethyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranoside | 31281-90-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: ethyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranoside
• 英文别名: Ethyl 2,3,4,6-tetra-O-acetyl-beta-D-galactopyranoside；[(2R,3S,4S,5R,6R)-3,4,5-triacetyloxy-6-ethoxyoxan-2-yl]methyl acetate
• CAS: 31281-90-0
• 化学式: C₁₆H₂₄O₁₀
• 分子量: 376.361
• InChiKey: XXSHCJSIEFYOFQ-LYYZXLFJSA-N

物化性质

• 沸点：
  421.0±45.0 °C(Predicted)
• 密度：
  1.24±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  26
• 可旋转键数：
  11
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  124
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  ethyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranoside 在 六甲基二硅烷 、 碘 作用下， 以 乙腈 为溶剂， 反应 0.5h， 以100%的产率得到Per-O-acetyl-ethyl-α-D-galactopyranosid
  参考文献：
  名称：

  碘-六甲基乙硅烷（HMDS）介导的过乙酰化1,2-反式连接的烷基和芳基糖苷的异构化

  摘要：

  已经发现在HMDS存在下用碘处理过乙酰化的烷基和芳基1，2-反式-糖苷会导致异构化，从而导致形成相应的1，2-顺式-糖苷。在具有短烷基链长的糖苷配基的烷基糖苷的情况下，观察到完全糖化为α-糖苷，而对于那些具有较长链长的糖苷，发现该过程是不完全的。这些观察已被机械地解释了。

  DOI：

  10.1016/j.carres.2010.02.012
• 作为产物：
  描述：

  beta-D-半乳糖五乙酸酯 在 氢溴酸 、 乙酸酐 、 silver carbonate 作用下， 以 二氯甲烷 、 溶剂黄146 为溶剂， 反应 44.0h， 生成 ethyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranoside
  参考文献：
  名称：

  Solution- and Solid-Phase Synthesis of Inhibitors of H. pylori Attachment and E-Selectin-Mediated Leukocyte Adhesion

  摘要：

  Chemical and enzymatic methods have been developed for the synthesis of the oligosaccharides NeuAc alpha 2-->3Gal beta 1 -->4GlcNAc beta 1-->3Gal and NeuAc alpha 2-->3Gal beta 1-->4(Fuc alpha 1-->3)GlcNAc beta 1-->3Gal as inhibitors for H. pylori and E-selectin, respectively. Gal, NeuAc, and Fuc were incorporated sequentially into the synthetic primer GlcNAc beta 1-->3Gal beta OEt by the corresponding glycosyltransferases to give both the tetrasaccharide and the pentasaccharide. This solution-phase strategy was then extended to the solid-phase synthesis of the tetrasaccharide. A disaccharide primer was first attached to controlled pore glass via a spacer group containing an ester bond, followed by enzymatic incorporation of Gal and NeuAc. Two to three equivalents of sugar nucleotides were used in the enzymatic glycosylationl and the conversion for each step was found to be > 98% as indicated in the analysis of products released by treatment with hydrazine.

  DOI：

  10.1021/ja00104a011

文献信息

• [EN] ELECTROCHEMICAL METHODS AND COMPOUNDS FOR THE DETECTION OF ENZYMES<br/>[FR] COMPOSÉS ET PROCÉDÉS ÉLECTROCHIMIQUES POUR LA DÉTECTION D'ENZYMES
  申请人：UNIV GEORGIA STATE RES FOUND

  公开号：WO2015184442A1

  公开（公告）日：2015-12-03

  Disclosed are compositions and methods for the electrochemical detection of enzymes, such as enzymes that are indicative of disease, disorders, or pathogens, such as viruses, bacteria, and fungi, or other disorders. These methods can be used in point-of- care diagnostic assays for the detection of disease, disorder, or pathogen (e.g., to identify the strain of pathogen infecting a patient in a healthcare setting). The electrochemical methods described herein can also be used to assess the susceptibility of a pathogen to an antipathogen drug. Also provided are probes suitable for use in conjunction with the methods described herein.

  本文揭示了一种用于电化学检测酶的组合物和方法，例如指示疾病、紊乱或病原体（如病毒、细菌和真菌）的酶。这些方法可用于疾病、紊乱或病原体的现场诊断检测（例如，在医疗环境中识别感染患者的病原体菌株）。本文描述的电化学方法还可用于评估病原体对抗病原药物的敏感性。还提供了适用于与本文描述的方法结合使用的探针。
• Glycosides
  申请人：Svenska Sockerfabriks AB

  公开号：US04675392A1

  公开（公告）日：1987-06-23

  An O-glycoside having the general formula: (sugar).sub.n --O--(CH.sub.2).sub.m --Hal wherein Hal is chlorine, bromine or iodine, m is an integer of 2-20 inclusive and n is an integer of 1 to 10, inclusive, with the proviso that when n=1 and m=2, the aldose is different from glucose; An O-glycoside having the general formula: (sugar).sub.n --O--(CH.sub.2).sub.m --S--R--R' wherein n is an integer of from 1-10, inclusive, m is an integer of from 2-20, inclusive, R is selected from the group consisting of alkyl having at most 25 carbon atoms and aryl and R' is selected from the group consisting of H, CHO, CH(OR').sub.2, NO.sub.2, NH.sub.2, OH, SH, COOH, COOCH.sub.3, COOCH.sub.2 CH.sub.3, CONHNH.sub.2 and CON.sub.3, wherein R" is C.sub.1-4 -alkyl; A glycoconjugate having the general formula: (sugar).sub.n --O--(CH.sub.2).sub.m --S--R--R" wherein n is an integer of from 1-10, inclusive, m is an integer of from 2-20, inclusive, R is selected from the group consisting of alkyl having at most 25 carbon atoms and aryl and R" constitutes a carrier; A bi-dentate O-glycoside having the general formula: [(sugar).sub.n --O--(CH.sub.2).sub.m --S--.sub.2 R wherein m, n and R have the above meaning; and processes for their preparation.

  一种具有一般式的O-糖苷：(糖).sub.n --O--(CH.sub.2).sub.m --Hal，其中Hal为氯、溴或碘，m为2-20的整数，n为1-10的整数，但当n=1且m=2时，醛糖与葡萄糖不同；一种具有一般式的O-糖苷：(糖).sub.n --O--(CH.sub.2).sub.m --S--R--R'，其中n为1-10的整数，m为2-20的整数，R选自最多具有25个碳原子的烷基和芳基，R'选自H、CHO、CH(OR').sub.2、NO.sub.2、NH.sub.2、OH、SH、COOH、COOCH.sub.3、COOCH.sub.2 CH.sub.3、CONHNH.sub.2和CON.sub.3的群，其中R"为C.sub.1-4-烷基；一种具有一般式的糖基结合物：(糖).sub.n --O--(CH.sub.2).sub.m --S--R--R"，其中n为1-10的整数，m为2-20的整数，R选自最多具有25个碳原子的烷基和芳基，R"构成载体；一种具有一般式的双叉O-糖苷：[(糖).sub.n --O--(CH.sub.2).sub.m --S--.sub.2R其中m，n和R具有上述含义；以及它们的制备过程。
• New and novel glycosides, glycoconjugates and processes for their preparation
  申请人：BIOCARB AB

  公开号：EP0098252A2

  公开（公告）日：1984-01-11

  An O-glycoside having the general formula: wherein Hal is chlorine, bromine or iodine, m is an integer of 2-20 inclusive and n is an integer of 1 to 10, inclusive, with the proviso that when n = 1 and m = 2, the aldose is different from glucose; An O-glycoside having the general formula: wherein n is an integer of from 1-10, inclusive, m is an integer of from 2-20, inclusive, R is selected from the group consisting of alkyl having at most 25 carbon atoms and aryl and R' is selected from the group consisting of H, CHO, CH(OR")2, NO2, NH2, OH, SH, COOH, COOCH3, COOCH2CH3, CONHNH2 and CON3, wherein R" is C1-4-alkyl; A glycoconjugate having the general formula: wherein n is an integer of from 1-10, inclusive, m is an integer of from 2-20, inclusive, R is selected from the group consisting of alkyl having at most 25 carbon atoms and aryl and R" constitutes a carrier; A bi-dentate 0-glycoside having the general formula: wherein m, n and R have the above meaning; and processes for their preparation.

  具有通式的 O-糖苷： 其中 Hal 为氯、溴或碘，m 为 2-20 个整数（含），n 为 1-10 个整数（含），但当 n = 1 和 m = 2 时，醛糖不同于葡萄糖； 具有通式的 O-糖苷： 其中 n 为 1-10 个整数（含 1-10 个），m 为 2-20 个整数（含 2-20 个），R 选自具有至多 25 个碳原子的烷基和芳基组成的组，R'选自 H、CHO、CH(OR")2、NO2、NH2、OH、SH、COOH、COOCH3、COOCH2CH3、CONHNH2 和 CON3 组成的组，其中 R "为 C1-4 烷基； 具有通式的糖结合剂： 其中 n 为 1-10 个整数（含 1-10 个），m 为 2-20 个整数（含 2-20 个），R 选自具有最多 25 个碳原子的烷基和芳基组成的组，R" 构成载体； 具有通式的双齿 0-糖苷： 其中 m、n 和 R 具有上述含义；及其制备方法。
• Electrochemical methods and compounds for the detection of enzymes
  申请人：GEORGIA STATE UNIVERSITY RESEARCH FOUNDATION, INC.

  公开号：US11092565B2

  公开（公告）日：2021-08-17

  Disclosed are compositions and methods for the electrochemical detection of enzymes, such as enzymes that are indicative of disease, disorders, or pathogens, such as viruses, bacteria, and fungi, or other disorders. These methods can be used in point-of-care diagnostic assays for the detection of disease, disorder, or pathogen (e.g., to identify the strain of pathogen infecting a patient in a healthcare setting). The electrochemical methods described herein can also be used to assess the susceptibility of a pathogen to an antipathogen drug. Also provided are probes suitable for use in conjunction with the methods described herein.

  所公开的是用于电化学检测酶的组合物和方法，如指示疾病、紊乱或病原体（如病毒、细菌和真菌）或其他紊乱的酶。这些方法可用于检测疾病、失调或病原体的护理点诊断检测（例如，在医疗环境中识别感染病人的病原体菌株）。本文所述的电化学方法还可用于评估病原体对抗病原体药物的敏感性。还提供了适合与本文所述方法结合使用的探针。
• Asp; Lindberg, Acta Chemica Scandinavica (1947), 1950, vol. 4, p. 1386,1388
  作者：Asp、Lindberg

  DOI：——

  日期：——