2-Deoxy-D-galactose | 25494-04-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-Deoxy-D-galactose
• 英文别名: 2-deoxy-D-lyxo-hexopyranose；2-Deoxy-D-galactopyranose；(4R,5R,6R)-6-(hydroxymethyl)oxane-2,4,5-triol
• CAS: 25494-04-6
• 化学式: C₆H₁₂O₅
• 分子量: 164.158
• InChiKey: PMMURAAUARKVCB-DUVQVXGLSA-N

物化性质

• 沸点：
  411.0±45.0 °C(Predicted)
• 密度：
  1.533±0.06 g/cm3(Predicted)
• 物理描述：
  Solid

计算性质

• 辛醇/水分配系数(LogP)：
  -1.6
• 重原子数：
  11
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  90.2
• 氢给体数：
  4
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  2-Deoxy-D-galactose 在 咪唑 、 碘 、 乙酰氯 、 三苯基膦 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 18.0h， 生成 methyl 3,6-anhydro-2-deoxy-α-D-galactopyranoside
  参考文献：
  名称：

  I 2介导的氨基甲酸酯环在哌啶合成中的应用和局限性：五元环与六元环的形成

  摘要：

  已经探索了用于合成哌啶的无保护基的合成策略。在合成关键是I 2介导的氨基甲酸酯环，其允许羟基取代alkenylamines的环化成哌啶，吡咯烷，和呋喃。在这项工作中，4个手性支架，比较和对比，并且据观察，与两个d半乳糖和2-脱氧d半乳糖作为原料，将变换到是哌啶-1- deoxygalactonorjirimycin（DGJ）和4-外延-可以通过几个步骤和良好的总收率分别获得fagomine。当d葡萄糖被用作起始材料，只有呋喃产物形成，而使用2-脱氧的d-葡萄糖导致化学和立体选择性的降低以及四种产物的形成。可以提供每种环糊精产物形成的机理解释，这有助于我们更好地理解哌啶合成中氨基甲酸酯环糊精的范围和局限性。

  DOI：

  10.1021/jo401512h
• 作为产物：
  描述：

  (+)-lyxo-(4R,5R,6R)-hept-1-ene-4,5,6,7-tetrol 在 二甲基硫 、 臭氧 作用下， 生成 2-Deoxy-D-galactose
  参考文献：
  名称：

  A stereochemically general synthesis of 2-deoxyhexoses via the asymmetric allylboration of 2,3-epoxy aldehydes

  摘要：

  A stereochemically general strategy for the synthesis of 2-deoxyhexoses is described. This new approach involves the asymmetric allylboration of epoxy aldehydes 12 and 13, prepared via the Sharpless asymmetric epoxidation reaction, as a means of establishing the stereochemistry of the sugar backbone. Thus, the matched double asymmetric allylborations of 12 and 13 using tartrate allylboronates (R,R)- and (S,S)-7, respectively, provide erythro epoxy alcohols 14 and 16 with excellent diastereoselectivity ( > 96:4) and enantioselectivity (greater-than-or-equal-to 96% ee). The mismatched double asymmetric reactions of 12 and 13 using (S,S)- and (R,R)-7, respectively, provided the diastereomeric threo epoxy alcohols 15 and 17 with lower (ca. 75:25) but still synthetically useful selectivity. The enantiomeric purity of the major diastereomer in each of these reactions was determined to be greater than that of the epoxy aldehyde precursors. Epoxy alcohols 14 and 16 were converted with excellent selectivity to the l-arabino (21) and l-xylo (26) tetrols via neighboring group assisted alpha-substitution reactions of the derived phenylurethane derivatives 18 and 23. Stereochemically complementary beta-opening reactions were accomplished by treating primary alcohols 38, 40, 42, and 44 [prepared from 14-17, respectively, by ethoxyethylation of C(4)-OH and removal of the C(7)-tert-butyldiphenylsilyl (TBDPS) ethers] with NaOH in aqueous t-BuOH at reflux. Acid-catalyzed hydrolysis of the C(4)-ethoxyethyl ethers then provided tetrols d-35 (from 14), d-21 (from 15), d-30 (from 16), and d-26 (from 17), each with excellent stereoselectivity. These tetrols were isolated and fully characterized as the tetraacetate derivatives 36, 22, 31, and 27, respectively. These beta-opening reactions proceed by way of an epoxide migration (29 to 33) that inverts the stereochemistry at C(6) and activates C(7) toward nucleophilic attack. It is necessary that the C(4) hydroxyl be protected in three of the four stereoisomeric series to minimize competitive epoxide migration pathways (cf. 29 to 32a). arabino tetrol 21 and lyxo tetrol 30 were converted to 2-deoxyglucose and 2-deoxygalactose, respectively, by a standard ozonolytic sequence and then to 2-deoxyglucitol pentaacetate (45) and 2-deoxygalactitol pentaacetate (46) via NaBH4 reduction of the 2-deoxy sugars, thereby confirming all stereochemical assignments. The epoxide beta-opening technology was also applied to epoxy benzyl ether 47 (prepared from 14) and epoxy BOM ether 49 (deriving from 16). These reactions provide tetrol derivatives 48 and 50, respectively, in which the C(4)- and C(5)-hydroxyl functionality are suitably differentiated for use in subsequent synthetic sequences.

  DOI：

  10.1021/jo00004a053

文献信息

• Determination of the absolute configuration of monosaccharides by a colour change in a chiral cholesteric liquid crystal system
  作者：Tony D. James、Takaaki Harada、Seiji Shinkai

  DOI：10.1039/c39930000857

  日期：——

  Cholesterylboronic acid complexes of monosaccharides alter the colour of a composite chiral cholesteric liquid crystal membrane, the direction of the colour change is indicative of the absolute configuration of the monosaccharide.

  单糖的胆甾醇硼酸复合物改变复合手性胆甾型液晶膜的颜色，颜色变化的方向指示单糖的绝对构型。
• Design, Synthesis and Biological Evaluation of Steroidal Glycoconjugates as Potential Antiproliferative Agents
  作者：Zhichao Du、Guolong Li、Haixia Ge、Xiaoyang Zhou、Jian Zhang

  DOI：10.1002/cmdc.202000966

  日期：2021.5.6

  was confirmed by crystal X‐ray diffraction. The compounds′ cytotoxicity on five human cancer cell lines was evaluated using a Cell Counting Kit‐8 assay, and structure–activity relationships (SAR) are discussed. 2‐deoxy‐d‐glucoside 5 k displayed the most potent antiproliferative activities against HepG2 cells with an IC50 value of 1.5 μM. Further pharmacological experiments on compound 5 k on HepG2

  为了系统地评估新糖基化对类固醇抗癌活性和选择性的影响，根据新糖基化方法设计并合成了薯蓣皂苷元、孕烯醇酮、脱氢表雄酮和雌酮四个系列的新糖苷。所有产物的结构均通过 NMR 分析阐明，C20-MeON-孕烯醇酮的立体化学通过晶体 X 射线衍射证实。使用细胞计数试剂盒-8 测定法评估了化合物对五种人类癌细胞系的细胞毒性，并讨论了结构活性关系 (SAR)。2-脱氧d葡糖苷为5K显示对HepG2细胞的最有效的抗增殖活性，其IC 50值为 1.5 μM。化合物5k在 HepG2 细胞上的进一步药理实验表明，它可以在 G0/G1 期引起形态变化和细胞周期停滞，然后诱导细胞凋亡，这可能与高迁移率组 Box 1 的表达增强有关。 HMGB1)。总之，这些发现证明类固醇的新糖基化可能是发现潜在抗增殖剂的有前途的策略。
• 31P-N.m.r. spectroscopy in wood chemistry. Phosphite derivatives of carbohydrates
  作者：Yuri Archipov、Dimitris S. Argyropoulos、Henry Bolker、Cyril Heitner

  DOI：10.1016/0008-6215(91)80005-8

  日期：1991.11

  and model compounds for lignin-carbohydrate complexes were reacted with 1,3,2-dioxaphospholanyl chloride, and the 31P-n.m.r. spectra of the derivatives were obtained in order to correlate the signals with the structural details of the compounds. The derivatives of most of the carbohydrates exhibited spectra containing well resolved signals in the range 138-132 p.p.m., and the number of lines accorded

  摘要使选定的无环和环状多元醇，单糖，二糖，高级寡糖和木质素-碳水化合物配合物的模型化合物与1,3,2-二氧杂磷酰氯酰氯反应，得到衍生物的31P-nmr光谱以使它们相互关联。表示化合物的结构细节。大多数碳水化合物的衍生物显示出的光谱包含在138-132 ppm范围内的分辨良好的信号，并且谱线数与相应化合物中的羟基数相符。单糖衍生物中C-1处磷原子的化学位移值是所涉及的端基异构体的特征。由于完全分解的光谱分别具有糖和木质素相关部分的特征信号，获得了相关模型化合物的一部分，该方法似乎非常适合于对木质素-碳水化合物复合物衍生的分子进行结构解析。对环糊精（环麦芽六-，庚-和八糖）进行了衍生化处理，检查后得出的光谱彼此之间存在显着差异。
• [EN] TARGETED NUCLEIC ACID CONJUGATE COMPOSITIONS<br/>[FR] COMPOSITIONS DE CONJUGUÉS D'ACIDES NUCLÉIQUES CIBLÉS
  申请人：PROTIVA BIOTHERAPEUTICS INC

  公开号：WO2017177326A1

  公开（公告）日：2017-10-19

  The invention provides conjugates that comprise a targeting moiety, a nucleic acid, and optional linking groups as well as synthetic intermediates and synthetic methods useful for preparing the conjugates. The conjugates are useful to target therapeutic nucleic acids to the liver and to treat liver diseases including hepatitis (e.g. hepatitis B and hepatitis D).

  这项发明提供了包括靶向基团、核酸和可选连接基团的共轭物，以及用于制备这些共轭物的合成中间体和合成方法。这些共轭物可用于将治疗性核酸靶向肝脏，并用于治疗包括肝炎（如乙型肝炎和丙型肝炎）在内的肝脏疾病。
• Efficient chemoenzymatic synthesis of novel galacto-N-biose derivatives and their sialylated forms
  作者：Lei Li、Yonghui Liu、Tiehai Li、Wenjun Wang、Zaikuan Yu、Cheng Ma、Jingyao Qu、Wei Zhao、Xi Chen、Peng G. Wang

  DOI：10.1039/c5cc03746h

  日期：——

  Novel galacto-N-biose derivatives and their sialylated form were efficiently synthesizedviaone-pot two-enzyme systems starting with monosaccharides.

  通过单糖开始，使用一锅两酶系统高效合成了新型半乳糖-N-生物素衍生物及其唾液酸化形式。