de-N-acetyl sialyl GM4 | 329785-24-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: de-N-acetyl sialyl GM4
• 英文别名: 2-(tetradecyl)hexadecyl (5-amino-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonic acid)-(2->3)-β-D-galactopyranoside；(2S,4S,5R,6R)-5-amino-2-[(2R,3S,4S,5R,6R)-3,5-dihydroxy-2-(hydroxymethyl)-6-(2-tetradecylhexadecoxy)oxan-4-yl]oxy-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid
• CAS: 329785-24-2
• 化学式: C₄₅H₈₇NO₁₃
• 分子量: 850.185
• InChiKey: IMSLENSHLMNXEQ-UTJOIBJBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8
• 重原子数：
  59
• 可旋转键数：
  36
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.98
• 拓扑面积：
  242
• 氢给体数：
  9
• 氢受体数：
  14

反应信息

• 作为反应物：
  描述：

  de-N-acetyl sialyl GM4 在 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 二甲基亚砜 为溶剂， 反应 12.0h， 以71%的产率得到cyclic sialyl GM4
  参考文献：
  名称：

  Synthesis of novel ganglioside GM4 analogues containing N-deacetylated and lactamized sialic acid: probes for searching new ligand structures for human L-selectin

  摘要：

  Novel ganglioside GM4 analogues, which contain N-deacetylated or lactamized sialic acid instead of usual N-acetylneuraminic acid, were synthesized in a highly efficient manner. (Methyl 4,7,8,9-tetra-O-acetyl-3,5-dideoxy-5-trifluoroacetamido-D-glycero alpha -D-galacto-2-nonulopyranosylonate)-(2-->3)-4,6-di-O-acetyl-2-O-benzoyl-D-galactopyranosyl trichloroacetimidate was coupled with 2-(tetradecyl)hexadecanol to give the desired beta -glycoside in high yield. Successive O- and N-deacylation, and saponification of the methyl ester group afforded the N-deacetylated sialyl derivative that was converted by treatment with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride in Me2SO into the lactamized sialic acid-containing ganglioside GM4 analogue. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(00)00278-0
• 作为产物：
  描述：

  (methyl 4,7,8,9-tetra-O-acetyl-3,5-dideoxy-5-trifluoroacetamido-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2->3)-4,6-di-O-acetyl-2-O-benzoyl-D-galactopyranosyl trichloroacetimidate 在 三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 、 sodium methylate 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 120.0h， 生成 de-N-acetyl sialyl GM4
  参考文献：
  名称：

  Synthesis of novel ganglioside GM4 analogues containing N-deacetylated and lactamized sialic acid: probes for searching new ligand structures for human L-selectin

  摘要：

  Novel ganglioside GM4 analogues, which contain N-deacetylated or lactamized sialic acid instead of usual N-acetylneuraminic acid, were synthesized in a highly efficient manner. (Methyl 4,7,8,9-tetra-O-acetyl-3,5-dideoxy-5-trifluoroacetamido-D-glycero alpha -D-galacto-2-nonulopyranosylonate)-(2-->3)-4,6-di-O-acetyl-2-O-benzoyl-D-galactopyranosyl trichloroacetimidate was coupled with 2-(tetradecyl)hexadecanol to give the desired beta -glycoside in high yield. Successive O- and N-deacylation, and saponification of the methyl ester group afforded the N-deacetylated sialyl derivative that was converted by treatment with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride in Me2SO into the lactamized sialic acid-containing ganglioside GM4 analogue. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(00)00278-0