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Methyl-5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-L-glycero-α-L-altro-2-nonulopyranosidonsaeuremethylester | 140385-84-8

中文名称
——
中文别名
——
英文名称
Methyl-5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-L-glycero-α-L-altro-2-nonulopyranosidonsaeuremethylester
英文别名
4,7,8,9-tetra-O-acetyl-N-acetylneuraminic acid;methyl (2R,4S,5R,6R)-5-acetamido-4-acetyloxy-2-methoxy-6-[(1R,2S)-1,2,3-triacetyloxypropyl]oxane-2-carboxylate
Methyl-5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-L-glycero-α-L-altro-2-nonulopyranosidonsaeuremethylester化学式
CAS
140385-84-8
化学式
C21H31NO13
mdl
——
分子量
505.476
InChiKey
BDVAGIAWBFWKLD-XVBWWKTGSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    593.7±50.0 °C(Predicted)
  • 密度:
    1.29±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    -0.85
  • 重原子数:
    35.0
  • 可旋转键数:
    10.0
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.71
  • 拓扑面积:
    179.06
  • 氢给体数:
    1.0
  • 氢受体数:
    13.0

反应信息

  • 作为反应物:
    描述:
    Methyl-5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-L-glycero-α-L-altro-2-nonulopyranosidonsaeuremethylester吡啶4-二甲氨基吡啶 、 palladium 10% on activated carbon 、 氢气sodium methylatesodium carbonate1,2-二氯乙烷三氟乙酸 作用下, 以 四氢呋喃甲醇二氯甲烷N,N-二甲基甲酰胺 为溶剂, 反应 73.5h, 生成 methyl (O-methyl-5-(N-(3β-hydroxy-lup-20(29)-en-28-oyl)amino)acetyl-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosyl)onate
    参考文献:
    名称:
    新型唾液酸(C-5 和 C-9)-五环三萜衍生物的合成和体外抗流感病毒评价
    摘要:
    流感病毒耐药变体的出现导致迫切需要确定新型有效的抗病毒药物。在我们之前的研究中,已经合成了一系列唾液酸(C-2 和 C-4)-五环三萜结合物,当唾液酸通过 C-4 与五环三萜结合时,观察到抗病毒活性提高了五倍比 C-2。正是在这里,我们进一步报道了新型唾液酸(C-5 和 C-9)-五环三萜偶联物的合成和抗流感活性。它们的结构经 ESI-HRMS、1H-NMR 和 13C-NMR 光谱分析证实。两种偶联物(26 和 42)在 CellTiter-Glo 测定中以 100 μM 的浓度显示出对 MDCK 细胞的强烈细胞毒性。然而,它们对 HL-60、Hela、和 A549 细胞系在 MTT 测定中在 10 μM 的浓度下(化合物 42 对 HL-60 细胞系(10 μM,~53%)显示弱细胞毒性除外)。化合物 20、28、36 和 44 对甲型流感/WSN/33 (H1N1) 病毒(100 μ
    DOI:
    10.3390/molecules22071018
  • 作为产物:
    参考文献:
    名称:
    Strukturelle Abwandlungen an N-Acetylneuramins�ure, 25. Mitt.: Synthese von Methyl-2-?-glycosiden von 4-epi-, 7-epi-, 8-epi- und 7,8-bis-epi-N-Acetylneuramins�ure
    摘要:
    The alpha-methylketoside of N-acetylneuraminic acid methylester (4) is transformed via the deacetylated compound 5 into the 9,8-O-isopropylidenderivative 6 which could be oxidized regioselectivity by RuO4 to the corresponding 4-oxo-sialic acid analogue 7. Reduction with the borane-ammonia complex produces a 1:1 mixture of 6 and the desired alpha-methylketoside of 9,8-O-isopropyliden-4-epi-N-acetyl-neuraminic acid methylester (8). Removing of the isopropylidene group gives the alpha-methylketoside of 4-epi-N-acetylneuraminic acid alpha-methylketoside (10). On the other hand compound 5 was turned into the 4,8,9-tri-O-t-butyldimethylsilylderivative 11 a from which the corresponding 7-oxo-compound 12 by oxidation with RuO4 derives. The reduction of 12 with BH3 - NH3 yielded a 1:1 mixture of the starting material 11 a and the desired 7-epi-derivative 13 a which gives either via the purified peracetylated alpha-methylketosid of 7-epi-N-acetylneuraminic acid methylester (14) or a direct saponification the sodium salt of 7-epi-N-acetylneuraminic acid-alpha-methylketoside (15).Applying the Konigs-Knorr procedure to the peracetylated 8-epi-N-acetylneuraminic acid methylester (16) gives rise to the formation of a 1:1 mixture of the corresponding alpha- and beta-methylketosides 17 and 18 besides traces of the corresponding 2,3-dideoxy-2,3-dideohydro-sialic acid derivative 19. After chromatographic separation of 17 further saponification leads to the sodium salt of 8-epi-N-acetylneuraminic acid-alpha-methylketoside (20). In an analogous procedure the sodium salt of 7,8-di-epi-N-acetylneuraminic acid-alpha-methylketoside (25) was prepared starting from the peracetylated 7,8-di-epi-N-acetylneuraminic acid methylester (21), whereby a mixture of the alpha- and beta-methylketosides 22 and 23 was formed in a ratio 95:5 besides traces of the peracetylated 2,3-dideoxy-2,3-didehydrosialic acid methylester (24).
    DOI:
    10.1007/bf00811116
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