ethyl 3,6-di-O-benzyl-2-deoxy-1-thio-2-trichloroacetamido-β-D-glucopyranoside | 399035-90-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: ethyl 3,6-di-O-benzyl-2-deoxy-1-thio-2-trichloroacetamido-β-D-glucopyranoside
• 英文别名: ethyl 3,6-di-O-benzyl-2-deoxy-2-N-trichloroacetamido-1-thio-β-D-glucopyranoside；2,2,2-trichloro-N-[(2S,3R,4R,5S,6R)-2-ethylsulfanyl-5-hydroxy-4-phenylmethoxy-6-(phenylmethoxymethyl)oxan-3-yl]acetamide
• CAS: 399035-90-6
• 化学式: C₂₄H₂₈Cl₃NO₅S
• 分子量: 548.915
• InChiKey: PUCPQNANSDZVKD-LMYCIYFBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  34
• 可旋转键数：
  10
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  102
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  乙酸酐 、 ethyl 3,6-di-O-benzyl-2-deoxy-1-thio-2-trichloroacetamido-β-D-glucopyranoside 在 吡啶 作用下， 以96%的产率得到ethyl 4-O-acetyl-3,6-di-O-benzyl-2-deoxy-1-thio-2-trichloroacetamido-β-D-glucopyranoside
  参考文献：
  名称：

  两种 HNK-1 相关五糖的高效合成

  摘要：

  合成了两种五糖，代表在复杂 N-聚糖上发现的那些，用作磺基转移酶的潜在底物。该合成是通过将二糖供体 β-D-GlcA(1→3)α-D-Gal-三氯乙酰亚胺添加到两个受体三糖 β-D-GlcNAc(1→6)α-D-Man(1) 中实现的→6)β-D-Man-O-辛基(15)和β-D-GlcNAc(1→2α-D-Man(1→6)β-D-Man-O-辛基(14)。脱保护后，两种五糖 1 和 2 通过 1 H NMR 光谱表征。

  DOI：

  10.1055/s-2003-40324
• 作为产物：
  描述：

  ethyl 2-deoxy-2-N-trichloroacetamido-1-thio-β-D-glucopyranoside 在 三乙基硅烷 、 三氟化硼乙醚 、 sodium hydride 、 三氟乙酸 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 3.5h， 生成 ethyl 3,6-di-O-benzyl-2-deoxy-1-thio-2-trichloroacetamido-β-D-glucopyranoside
  参考文献：
  名称：

  两种 HNK-1 相关五糖的高效合成

  摘要：

  合成了两种五糖，代表在复杂 N-聚糖上发现的那些，用作磺基转移酶的潜在底物。该合成是通过将二糖供体 β-D-GlcA(1→3)α-D-Gal-三氯乙酰亚胺添加到两个受体三糖 β-D-GlcNAc(1→6)α-D-Man(1) 中实现的→6)β-D-Man-O-辛基(15)和β-D-GlcNAc(1→2α-D-Man(1→6)β-D-Man-O-辛基(14)。脱保护后，两种五糖 1 和 2 通过 1 H NMR 光谱表征。

  DOI：

  10.1055/s-2003-40324

文献信息

• TMSOTf-Catalyzed Silylation: Streamlined Regioselective One-Pot Protection and Acetylation of Carbohydrates
  作者：A. Abragam Joseph、Ved Prakash Verma、Xin-Yi Liu、Chia-Hui Wu、Vijay M. Dhurandhare、Cheng-Chung Wang

  DOI：10.1002/ejoc.201101267

  日期：2012.2

  A highly efficient TMSOTf-catalyzed HMDS silylation of sugars, which can easily be integrated with subsequent reactions in one-pot fashion, has been developed. Its usefulness was demonstrated by applications to streamlined regioselective one-pot protection and nonenzymatic acetylation of un

  已经开发出一种高效的 TMSOTf 催化的 HMDS 糖基硅烷化，它可以很容易地以一锅法与后续反应相结合。其在简化区域选择性一锅法保护和非酶乙酰化方面的应用证明了其有用性。
• The presence of water improves reductive openings of benzylidene acetals with trimethylaminoborane and aluminium chloride
  作者：Andrei A. Sherman、Yuri V. Mironov、Olga N. Yudina、Nikolay E. Nifantiev

  DOI：10.1016/s0008-6215(03)00015-6

  日期：2003.4

  efficient for the reductive openings of the cyclic benzylidene acetals with Me(3)N x BH(3) in tetrahydrofurane than the AlCl(3) alone. Under proposed conditions, the dioxane-type 4,6-O-bezylidene acetals of hexopyranosides give regioselectively the corresponding 4-hydroxy,6-O-benzyl derivatives in excellent yields. Reductive openings of the dioxolane-type 3,4-O-benzylidene acetals of galactopyranoside are

  由无水AlCl（3）和H（2）O以3：1比例原位形成的酸性试剂比四氢呋喃中Me（3）N x BH（3）还原环亚苄基乙缩醛的效率高得多单独的AlCl（3）。在提出的条件下，己吡喃糖苷的二恶烷型4，6-O-亚苄基乙缩醛以优异的产率选择性地给出相应的4-羟基，6-O-苄基衍生物。半乳糖吡喃糖苷的二氧戊环型3,4-O-亚苄基乙缩醛的还原开口也非常有效且具有区域选择性，可生成3-O-苄基衍生物（来自3,4-O-外亚苄基乙缩醛）或4-O-苄基衍生物（来自3,4-O-内-亚苄基缩醛）取决于缩醛碳原子的构型。
• 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.
• Efficient Synthesis of Two HNK-1 Related Pentasaccharides
  作者：Ole Hindsgaul、Frederic Belot、Albin Otter、Minoru Fukuda

  DOI：10.1055/s-2003-40324

  日期：——

  Two pentasaccharides, representative of those found on complex N-glycans, were synthesized for use as potential substrates for sulfotransferases. The synthesis was achieved by the addition of a disaccharide donor β-D-GlcA(1→3)α-D-Gal-trichloroacetimidate to the two acceptor trisaccharides β-D-GlcNAc( 1→6)α-D-Man(1→6)β-D-Man-O-octyl (15) and β-D-GlcNAc(1→2α-D-Man(1→6)β-D-Man-O-octyl (14). After deprotection

  合成了两种五糖，代表在复杂 N-聚糖上发现的那些，用作磺基转移酶的潜在底物。该合成是通过将二糖供体 β-D-GlcA(1→3)α-D-Gal-三氯乙酰亚胺添加到两个受体三糖 β-D-GlcNAc(1→6)α-D-Man(1) 中实现的→6)β-D-Man-O-辛基(15)和β-D-GlcNAc(1→2α-D-Man(1→6)β-D-Man-O-辛基(14)。脱保护后，两种五糖 1 和 2 通过 1 H NMR 光谱表征。