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phenyl 2,3-di-O-benzyl-4,6-di-O-chloroacetyl-1-thio-β-D-galactopyranoside | 1400562-33-5

中文名称
——
中文别名
——
英文名称
phenyl 2,3-di-O-benzyl-4,6-di-O-chloroacetyl-1-thio-β-D-galactopyranoside
英文别名
Bn(-2)[Bn(-3)][ClAc(-4)][ClAc(-6)]Gal(b)-SPh;[(2R,3S,4S,5R,6S)-3-(2-chloroacetyl)oxy-4,5-bis(phenylmethoxy)-6-phenylsulfanyloxan-2-yl]methyl 2-chloroacetate
phenyl 2,3-di-O-benzyl-4,6-di-O-chloroacetyl-1-thio-β-D-galactopyranoside化学式
CAS
1400562-33-5
化学式
C30H30Cl2O7S
mdl
——
分子量
605.536
InChiKey
XDRYTPIJDCRNRX-BANMPPSNSA-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

计算性质

  • 辛醇/水分配系数(LogP):
    6.2
  • 重原子数:
    40
  • 可旋转键数:
    15
  • 环数:
    4.0
  • sp3杂化的碳原子比例:
    0.33
  • 拓扑面积:
    106
  • 氢给体数:
    0
  • 氢受体数:
    8

反应信息

  • 作为反应物:
    描述:
    phenyl 2,3-di-O-benzyl-4,6-di-O-chloroacetyl-1-thio-β-D-galactopyranoside扁桃酸苄酯N-碘代丁二酰亚胺三氟甲磺酸 作用下, 以 二氯甲烷 为溶剂, 反应 0.08h, 以79%的产率得到benzyl (2S)-2-O-(4,6-di-O-chloroacetyl-2,3-di-O-benzyl-α-D-galactopyranosyl)-2-phenylacetate
    参考文献:
    名称:
    The effect of electron withdrawing protecting groups at positions 4 and 6 on 1,2-cis galactosylation
    摘要:
    Ethyl 2,3,4-O-tribenzyl-6-O-chloroacetyl-1-D-thiogalactoside, phenyl 4,6-O-diacetyl-2,3-dibenzyl-1-D-thiogalactoside and phenyl 2,3-O-dibenzyl-4,6-O-dichloroacetyl-1-D-thiogalactoside were employed in the study of the stereoselectivity of the glycosylation reaction with several acceptors, ranging from unhindered linear primary alcohols to other sugars, using NIS/TfOH as activator. Higher alpha-selectivities were obtained in the glycosylation reactions with phenyl 2,3-O-dibenzyl-4,6-O-dichloroacetyl-1-D-thiogalactoside as the donor, showing that a stronger electron withdrawing 4-O-ester group had an influence in the anomeric selectivity favouring the formation of 1,2-cis galactosides. (C) 2013 Elsevier Ltd. All rights reserved.
    DOI:
    10.1016/j.tet.2013.06.038
  • 作为产物:
    描述:
    phenyl 2,3-di-O-benzyl-1-thio-β-D-galactopyranoside 、 氯乙酸酐吡啶 作用下, 以 二氯甲烷 为溶剂, 反应 4.0h, 生成 phenyl 2,3-di-O-benzyl-4,6-di-O-chloroacetyl-1-thio-β-D-galactopyranoside
    参考文献:
    名称:
    一种使用N,N-二乙基氨基三氟化硫(DAST)由硫代糖苷合成受保护的糖基氟化物的改进方法。
    摘要:
    使用N,N-二乙基氨基三氟化硫(DAST)检查了硫糖苷直接转化为寡糖合成中常用的糖基氟化物。尽管反应在没有N-溴代琥珀酰亚胺(NBS)的情况下进行,但在某些情况下,发现Vilsmeier型亲电electro阳离子物种的亲电性不足以活化某些反应性较低的硫代糖苷。在这里,我们报告了在不存在NBS的情况下使用DAST进行的一系列单糖氟化反应的结果,并讨论了在存在二甲基(甲硫基)s三氟甲烷磺酸盐(DMTST)的情况下加速反应的过程,从而提高了产品收率。
    DOI:
    10.1016/j.carres.2012.07.003
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文献信息

  • An improved method for the synthesis of protected glycosyl fluorides from thioglycosides using N,N-diethylaminosulfur trifluoride (DAST)
    作者:Katsuhiko Suzuki、Yukishige Ito、Osamu Kanie
    DOI:10.1016/j.carres.2012.07.003
    日期:2012.10
    examined using N,N-diethylaminosulfur trifluoride (DAST). Although the reaction proceeded without N-bromosuccinimide (NBS), in some cases it was found that the electrophilicity of the Vilsmeier-type electrophilic sulfinium cation species was not sufficient for the activation of certain less-reactive thioglycosides. Here, we report the results of fluorination reactions of a series of monosaccharides using
    使用N,N-二乙基氨基三氟化硫(DAST)检查了硫糖苷直接转化为寡糖合成中常用的糖基氟化物。尽管反应在没有N-溴代琥珀酰亚胺(NBS)的情况下进行,但在某些情况下,发现Vilsmeier型亲电electro阳离子物种的亲电性不足以活化某些反应性较低的硫代糖苷。在这里,我们报告了在不存在NBS的情况下使用DAST进行的一系列单糖氟化反应的结果,并讨论了在存在二甲基(甲硫基)s三氟甲烷磺酸盐(DMTST)的情况下加速反应的过程,从而提高了产品收率。
  • The effect of electron withdrawing protecting groups at positions 4 and 6 on 1,2-cis galactosylation
    作者:Eva C. Lourenço、M. Rita Ventura
    DOI:10.1016/j.tet.2013.06.038
    日期:2013.8
    Ethyl 2,3,4-O-tribenzyl-6-O-chloroacetyl-1-D-thiogalactoside, phenyl 4,6-O-diacetyl-2,3-dibenzyl-1-D-thiogalactoside and phenyl 2,3-O-dibenzyl-4,6-O-dichloroacetyl-1-D-thiogalactoside were employed in the study of the stereoselectivity of the glycosylation reaction with several acceptors, ranging from unhindered linear primary alcohols to other sugars, using NIS/TfOH as activator. Higher alpha-selectivities were obtained in the glycosylation reactions with phenyl 2,3-O-dibenzyl-4,6-O-dichloroacetyl-1-D-thiogalactoside as the donor, showing that a stronger electron withdrawing 4-O-ester group had an influence in the anomeric selectivity favouring the formation of 1,2-cis galactosides. (C) 2013 Elsevier Ltd. All rights reserved.
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