2-trichloromethyl-(3,4,6-tri-O-acetyl-1,2-dideoxy-α-D-glucopyrano)<2,1-d>2-oxazoline | 161545-21-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-trichloromethyl-(3,4,6-tri-O-acetyl-1,2-dideoxy-α-D-glucopyrano)<2,1-d>2-oxazoline
• 英文别名: [(3aR,5R,6S,7R,7aR)-6,7-diacetyloxy-2-(trichloromethyl)-5,6,7,7a-tetrahydro-3aH-pyrano[3,2-d][1,3]oxazol-5-yl]methyl acetate
• CAS: 161545-21-7
• 化学式: C₁₄H₁₆Cl₃NO₈
• 分子量: 432.642
• InChiKey: RZRRUSISTGOCFI-LZQZFOIKSA-N

物化性质

• 沸点：
  444.9±45.0 °C(Predicted)
• 密度：
  1.65±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  26
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  110
• 氢给体数：
  0
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  2-trichloromethyl-(3,4,6-tri-O-acetyl-1,2-dideoxy-α-D-glucopyrano)<2,1-d>2-oxazoline 在 偶氮二异丁腈 、 三氟甲磺酸三甲基硅酯 、 三正丁基氢锡 作用下， 以 1,2-二氯乙烷 、 甲苯 、 苯 为溶剂， 反应 2.0h， 生成 methyl 4)-2,3-di-O-benzyl-β-D-glucopyranosid>uronate
  参考文献：
  名称：

  2-脱氧-2-三氯乙酰氨基-d-吡喃葡萄糖衍生物在寡糖合成中的应用

  摘要：

  测试了3,4,6-三-O-乙酰基-2-脱氧-2-三氯乙酰氨基-α-D-吡喃葡糖基三氯乙酰亚氨酸酯及其O-苄基类似物与一组未在O上取代的糖受体在反应中的糖基供体-3和O-4，通常在寡糖合成中遇到。以良好至极好的收率获得糖苷，仅略微过量（1.1-1.2当量）的供体，并具有高度的1，2-反式立体选择性。假定相应的2-（三氯甲基）恶唑啉鎓离子是主要的反应性中间体。在中性条件下，通过用三丁基锡烷还原，二糖产物中的N-三氯乙酰基很容易转化为N-乙酰基。

  DOI：

  10.1016/0008-6215(94)84038-5
• 作为产物：
  描述：

  3,4,6-tri-O-acetyl-2-deoxy-2-trichloroacetamido-α/β-D-glucopyranose trichloroacetimidate 在 silica gel 作用下， 生成 2-trichloromethyl-(3,4,6-tri-O-acetyl-1,2-dideoxy-α-D-glucopyrano)<2,1-d>2-oxazoline
  参考文献：
  名称：

  Glycoconjugates and use thereof as vaccine against Shigella flexneri serotype 3a and X

  摘要：

  本发明涉及从糖类衍生的化合物，其重现志贺氏菌弗氏菌血清型3a和X的表位，并且涉及将其用于制备疫苗组合物。更具体地，本发明涉及包括下文描述的寡糖或多糖的新型糖结合化合物，用于合成这些寡糖或多糖和糖结合物的方法，这些寡糖或多糖的衍生物，含有这些衍生物的组合物，以及将糖结合物用于疫苗目的的用途。最后，本发明涉及使用一个或多个寡糖或多糖或其结合物诊断志贺氏菌弗氏菌感染的方法。

  公开号：

  US08815239B2

文献信息

• Study of glycosylation with N-trichloroacetyl-d-glucosamine derivatives in the syntheses of the spacer-armed pentasaccharides sialyl lacto-N-neotetraose and sialyl lacto-N-tetraose, their fragments, and analogues
  作者：Andrei A. Sherman、Olga N. Yudina、Yury V. Mironov、Elena V. Sukhova、Alexander S. Shashkov、Vladimir M. Menshov、Nikolay E. Nifantiev

  DOI：10.1016/s0008-6215(01)00213-0

  日期：2001.11

  The syntheses of 2-aminoethyl glycosides of the pentasaccharides Neu5Ac-alpha (2 --> 3)-Gal-beta (3(1 --> 4)-GlcNAc-beta (3(1 --> 3)-Gal-beta (1 --> 4)-Glc and Neu5Ac-alpha (2 --> 3)-Gal-beta (1 --> 3)-GlcNAc-beta (1 --> 3)-Gal-beta (1 --> 4)-Glc, their asialo di-, tri-, and tetrasaccharide fragments, and analogues included a systematic study of glycosylation with variously protected mono- and disaccharide donors derived from N-trichloroacetyl-D-glucosamine of galactose, lactose, and lactosamine glycosyl acceptors bearing benzoyl protection around the OH group to be glycosylated. Despite the. low reactivity of these acceptors, stereo specificity and good to excellent yields were obtained with NIS-TfOH-activated thioglycoside donors of such type, or with AgOTf-activated glycosyl bromides, while other promotors, as well as a trichloroacetimidate donor, were less effective, and a beta -acetate donor was inactive. In NIS-TfOH-promoted glycosylation with the thioglycosides, the use of TfOH in catalytic amount led to rapid formation of the corresponding oxazoline, but the quantity of TfOH necessary for further efficient coupling with an acceptor depended on the reactivity of the donor, varying from 0.07 equiv for a 3,6-di-O-benzylated monosaccharide derivative to 2.1 equiv for a peracetylated disaccharide one. In the glycosylation products, the N-trichloroacetyl group was easily converted into N-acetyl by alkaline hydrolysis followed by N-acetylation. (C) 2001 Elsevier Science Ltd. All rights reserved.
• A Moenomycin-type Structural Analogue of Lipid II some possible mechanisms of the mode of action of transglycosylase inhibitors can be discarded
  作者：Ralf Kosmol、Lothar Hennig、Peter Welzel、Matthias Findesien、Dietrich Müller、Astrid Markus、Jean van Heijenoort

  DOI：10.1002/prac.19973390162

  日期：——

  The transglycosylation step in the peptidoglycan biosynthesis belongs to the general class of glycosyltransferase-catalyzed reactions. The structural analogue 2 of moenomycin A has been synthesized and has been found to be antibiotically inactive. The assumption that moenomycin-type transglycosylase inhibitors such as 1 bind at the donor site of the enzyme and that their mode of action is the result of the high stability of the sugar --> phosphate bond seems to be ruled out by the present results.