dodecyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1->4)-2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranoside | 188426-31-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: dodecyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1->4)-2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranoside
• CAS: 188426-31-5
• 化学式: C₃₈H₆₁NO₁₇
• 分子量: 803.899
• InChiKey: XJIPTMZPXZETRA-IXXROAOOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.12
• 重原子数：
  56.0
• 可旋转键数：
  23.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  223.82
• 氢给体数：
  1.0
• 氢受体数：
  17.0

反应信息

• 作为反应物：
  描述：

  dodecyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1->4)-2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranoside 在 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 3.0h， 以99%的产率得到dodecyl β-D-galactopyranosyl-(1->4)-2-acetamido-2-deoxy-β-D-glucopyranoside
  参考文献：
  名称：

  Glycosylation of dodecyl 2-acetamido-2-deoxy-β-d-glucopyranoside and dodecyl β-d-galactopyranosyl-(1→4)-2-acetamido-2-deoxy-β-d-glucopyranoside as saccharide primers in cells

  摘要：

  Syntheses of oligosaccharides expressed on cells are indispensable for the improvement of the functional analyses of the oligosaccharides and their applications. We are developing saccharide primers for synthesizing oligosaccharides using living cells. In this study, dodecyl 2-acetamido-2-deoxy-beta-D-glucopyranoside (GlcNAc-C12) and dodecyl beta-D-galactopyranosyl-(1 -> 4)-2-acetamido-2-deoxy-beta-D-glucopyranoside (LacNAc-C12) were examined for their abilities to prime the syntheses of neolacto-series oligosaccharides in HL60 cells. When GlcNAc-C12 was incubated with HL60 cells in serum-free medium for 2 days, 14 kinds of glycosylated products were collected from the culture medium. They were separated by high-performance liquid chromatography. The sequences of the products were determined to be neolacto-series oligosaccharides including Lewis(X), sialyl Lewis(X), polylactosamine, and sialylpolylactosamine by mass spectrometry. GlcNAc-C12 was also glycosylated by B16 cells and gave sialyllactosamine. Furthermore, LacNAc-C12 gave similar glycosylated products to GlcNAc-C12. (C) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2008.01.022
• 作为产物：
  描述：

  hexa-O-acetyl-D-lactal 在 三氟甲磺酸三甲基硅酯 、 叠氮基三甲基硅烷 、 碘 作用下， 以 二氯甲烷 、 溶剂黄146 为溶剂， 反应 46.0h， 生成 dodecyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1->4)-2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranoside
  参考文献：
  名称：

  A convenient access to β-glycosides of N-acetyllactosamine

  摘要：

  Iodoacetoxylation of 3,6-di-0-acetyI-4-0-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-1,5-anhydro-2-deoxy-D-arabino-hex-1-enitol (hexa-O-acetyllactal) and the corresponding hexa-O-benzoyl derivative, gave the alpha-1,2-trans 1-O-acetyl-2-deoxy-2-iodo adducts with high stereoselectivity and good yields. These were treated with an excess of trimethylsilyl azide in the presence of trimethylsilyl trifluoromethanesulfonate affording the corresponding alpha-1,2-trans 2-deoxy-2-iodoglycosyl azides. In the presence of an alcohol, a Staudinger reaction at the anomeric azide ledin situ to an iminophosphorane which rearranged with elimination of iodine at C-2. The aziridine intermediate thus obtained reacted with a suitable alcohol to afford the corresponding lactosamine beta-glycosides. The reaction occurred with double inversion of configuration at C-1 and C-2. Deprotection of the amine functionality and further transformation into the acetamido derivatives could be achieved without isolation of the intermediates. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0008-6215(96)00263-7