S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1<*>4)-2,3,6-tri-O-benzoyl-4-thio-β-D-glucopyranosyl-(1<*>1)-(2S,3R,4E)-3-O-benzoyl-2-dichloroacetamido-4-octadecen-1,3-diol | 173067-88-4

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 鞘脂
• 英文名称: S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1<*>4)-2,3,6-tri-O-benzoyl-4-thio-β-D-glucopyranosyl-(1<*>1)-(2S,3R,4E)-3-O-benzoyl-2-dichloroacetamido-4-octadecen-1,3-diol
• 英文别名: S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1[*]4)-2,3,6-tri-O-benzoyl-4-thio-β-D-glucopyranosyl-(1[*]1)-(2S,3R,4E)-3-O-benzoyl-2-dichloroacetamido-4-octadecen-1,3-diol
• CAS: 173067-88-4
• 化学式: C₆₈H₈₁Cl₂NO₂₀S
• 分子量: 1335.36
• InChiKey: QGWFWCNDAFFAMA-AZCWLXJDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.99
• 重原子数：
  92.0
• 可旋转键数：
  35.0
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.49
• 拓扑面积：
  267.19
• 氢给体数：
  1.0
• 氢受体数：
  21.0

反应信息

• 作为反应物：
  描述：

  S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1<*>4)-2,3,6-tri-O-benzoyl-4-thio-β-D-glucopyranosyl-(1<*>1)-(2S,3R,4E)-3-O-benzoyl-2-dichloroacetamido-4-octadecen-1,3-diol 在 氢氧化钾 、 N,N-二异丙基乙胺 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 51.0h， 生成 S-β-D-galactopyranosyl-(1<*>4)-4-thio-β-D-glucopyranosyl-(1<*>1)-(2S,3R,4E)-2-<8-N-(7-nitrobenz-1,3-diazol-2-oxa-4-yl)amino>octanamido-4-octadecen-1,3-diol
  参考文献：
  名称：

  Synthesis of fluorescent and radioactive analogues of two lactosylceramides and glucosylceramide containing β-thioglycosidic bonds that are resistant to enzymatic degradation

  摘要：

  Condensation of 2-S-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-2-thiopseudourea hydrobromide with 2,3,6-tri-O-benzoyl-4-O-trifluoromethylsulfonyl-beta-D-galactopyranosy-(1-->1)-(2S,3R,4E)-3-O-benzoyl-2-dichloroacetamido-4-octadecan afforded S-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-(1-->4)-2,3,6-tri-O-benzoyl-4-thio-beta-D-glucopyranosyl-(1-->1)-(2S, 3R,4E)-3-O-benzoyl-2-dichloroacetamido-4 in good yield. Removal of the protecting groups, followed by selective N-acylation of the sphingosine amino group with either a fluorescent or a radioactive fatty acid, gave labeled lactosylceramide analogues in good yield. Since these products contained a beta-thioglycosidic bond between the two sugar moieties, they were totally resistant to the action of acid lysosomal glycosidases. Likewise, condensation of 2-S(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosy hydrobromide and 2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl-(1-->4)-2,3,6-tri-O- acetyl-1-S-acetyl-1-thio-beta-D-glucopyranose with (2R,3R,4E)-3-O-benzoyl-2-dichloroacetamido-1-iodo-4-octadecen-3-ol in methanolic sodium acetate afforded the corresponding beta-thioglycosides 14 and 16, respectively, in good yield. These beta-thioglycosides were converted into glucosylceramide and lactosylceramide analogues following removal of the protecting groups and by subsequent selective N-acylation using either a fluorescent or radioactive fatty acid N-succinimidyl ester. Whereas the glucosylthioceramides thus obtained proved to be completely undegradable by lysosomal glucocerebrosidase, the lactosylceramides containing the beta-thioglycosidic bond between the lactose and the ceramide residues could be degraded by lysosomal GM1-beta-galactosidase to give the corresponding glucosylthioceramides. These compounds did not yield to any further enzymatic degradation.

  DOI：

  10.1016/0008-6215(95)00189-z
• 作为产物：
  描述：

  β-D-galactopyranosyl-(1<*>1)-(2S,3R,4E)-2-dichloroacetamido-4-octadecen-1,3-diol 在 吡啶 、 甲醇 、 potassium carbonate 、 对甲苯磺酸 作用下， 以 甲醇 、 二氯甲烷 、 氯仿 、 N,N-二甲基甲酰胺 、 丙酮 为溶剂， 反应 62.0h， 生成 S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1<*>4)-2,3,6-tri-O-benzoyl-4-thio-β-D-glucopyranosyl-(1<*>1)-(2S,3R,4E)-3-O-benzoyl-2-dichloroacetamido-4-octadecen-1,3-diol
  参考文献：
  名称：

  Synthesis of fluorescent and radioactive analogues of two lactosylceramides and glucosylceramide containing β-thioglycosidic bonds that are resistant to enzymatic degradation

  摘要：

  Condensation of 2-S-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-2-thiopseudourea hydrobromide with 2,3,6-tri-O-benzoyl-4-O-trifluoromethylsulfonyl-beta-D-galactopyranosy-(1-->1)-(2S,3R,4E)-3-O-benzoyl-2-dichloroacetamido-4-octadecan afforded S-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-(1-->4)-2,3,6-tri-O-benzoyl-4-thio-beta-D-glucopyranosyl-(1-->1)-(2S, 3R,4E)-3-O-benzoyl-2-dichloroacetamido-4 in good yield. Removal of the protecting groups, followed by selective N-acylation of the sphingosine amino group with either a fluorescent or a radioactive fatty acid, gave labeled lactosylceramide analogues in good yield. Since these products contained a beta-thioglycosidic bond between the two sugar moieties, they were totally resistant to the action of acid lysosomal glycosidases. Likewise, condensation of 2-S(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosy hydrobromide and 2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl-(1-->4)-2,3,6-tri-O- acetyl-1-S-acetyl-1-thio-beta-D-glucopyranose with (2R,3R,4E)-3-O-benzoyl-2-dichloroacetamido-1-iodo-4-octadecen-3-ol in methanolic sodium acetate afforded the corresponding beta-thioglycosides 14 and 16, respectively, in good yield. These beta-thioglycosides were converted into glucosylceramide and lactosylceramide analogues following removal of the protecting groups and by subsequent selective N-acylation using either a fluorescent or radioactive fatty acid N-succinimidyl ester. Whereas the glucosylthioceramides thus obtained proved to be completely undegradable by lysosomal glucocerebrosidase, the lactosylceramides containing the beta-thioglycosidic bond between the lactose and the ceramide residues could be degraded by lysosomal GM1-beta-galactosidase to give the corresponding glucosylthioceramides. These compounds did not yield to any further enzymatic degradation.

  DOI：

  10.1016/0008-6215(95)00189-z