carboxymethyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-2,3,6-tri-O-acetyl-β-D-glucopyranoside | 152733-56-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: carboxymethyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-2,3,6-tri-O-acetyl-β-D-glucopyranoside
• 英文别名: carboxymethyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-acetyl-β-D-glucopyranoside；carboxymethyl-4-O-[2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl]-2,3,6-tri-O-acetyl-β-D-glucopyranoside
• CAS: 152733-56-7
• 化学式: C₂₈H₃₈O₂₀
• 分子量: 694.598
• InChiKey: MMUYTIFHOOPPEB-YQIUXXSFSA-N

物化性质

• 沸点：
  728.8±60.0 °C(predicted)
• 密度：
  1.41±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1.29
• 重原子数：
  48.0
• 可旋转键数：
  14.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  258.32
• 氢给体数：
  1.0
• 氢受体数：
  19.0

反应信息

• 作为反应物：
  描述：

  carboxymethyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-2,3,6-tri-O-acetyl-β-D-glucopyranoside 在 sodium hydroxide 作用下， 以 甲醇 为溶剂， 反应 0.5h， 生成 carboxymethyl O-β-D-galactopyranosyl-(1->4)-β-D-glucopyranoside
  参考文献：
  名称：

  新型单和二糖基羧甲基糖苷内酯（CMGL）的合成及其在1,2-双官能化碳水化合物合成子中的应用

  摘要：

  描述了单和二糖基羧甲基糖苷内酯（CMGLs）的一般和方便访问。通过利用由胺打开CMGL之后在2-位获得的游离OH，报道了一系列新的1,2-双官能化碳水化合物合成子的合成。

  DOI：

  10.1016/j.tetasy.2008.07.016
• 作为产物：
  描述：

  2,3,6,2',3',4',6'-hepta-O-acetyl-α-D-lactosyl trichloroacetimidate 在 palladium on activated charcoal 、 三氟甲磺酸三甲基硅酯 氢气 作用下， 以 乙醇 、 二氯甲烷 为溶剂， 反应 2.5h， 生成 carboxymethyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-2,3,6-tri-O-acetyl-β-D-glucopyranoside
  参考文献：
  名称：

  Synthesis of multivalent β-lactosyl clusters as potential tumor metastasis inhibitors

  摘要：

  A beta-lactosyl residue was linked to the amino groUpS Of L-lysyl-L-lysine through spacer arms of three different lengths (C2, C4, and C-9) to give trivalent beta-lactosyl clusters in order to increase the inhibitory activity of the beta-lactosyl group against tumor cell colonization. Thus, O-(2,3,4,6-tetra-0-acetyl-beta-D-galactopyranosyl)-(1 --> 4)-2,3,6-tri-O-acetyl-glucopyranosyl trichloroacetimidate was treated with methyl or benzyl hydroxyethanoate, methyl or benzyl 4-hydroxybutanoate, and methyl 9-hydroxynonanoate, respectively, in the presence of trimethylsilyl trifluoromethanesulfonate to give the corresponding beta-lactosides. These were coupled to L-lysyl-L-lysine, after conversion to the N-hydroxysuccinimide esters, to yield the corresponding trivalent beta-lactosyl-L-lysyl-L-lysine conjugates in good yields. The beta-lactosyl group with a C4 spacer arm was also coupled similarly to poly(L-lysine) (M(r) 3800) to form a polyvalent beta-lactosyl cluster. Coinjection of the trivalent (with C2 and C4 spacer arms) and polyvalent beta-lactosyl clusters with the highly metastatic B16 murine melanoma cells inhibited the formation of lung colonies in C57/BL mice, whereas the trivalent cluster with a C-9 spacer arm displayed no activity.

  DOI：

  10.1016/0008-6215(93)80071-l

文献信息

• Synthesis of Multivalent Tuberculosis and <i>Leishmania</i>-Associated Capping Carbohydrates Reveals Structure-Dependent Responses Allowing Immune Evasion
  作者：Eun-Ho Song、Alex O. Osanya、Christine A. Petersen、Nicola L. B. Pohl

  DOI：10.1021/ja103351m

  日期：2010.8.25

  Mycobacterium tuberculosis and the protozoan parasites of the genus Leishmania are intracellular pathogens that can survive in macrophages-the very white blood cells of the immune system responsible for engulfing and ultimately clearing foreign invaders. The ability of these pathogens to hide within immune cells has made the design of effective therapies, including vaccines, to control tuberculosis and leishmaniasis particularly challenging. Herein we present the synthesis and development of carbohydrate-based probes to demonstrate that changes in pathogen-associated surface oligosaccharides are sufficient to alter cellular immune responses and thereby let a pathogen hide from immune surveillance.