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首页> 外文期刊>Journal of Medicinal Chemistry >Modulation of the H-Bond Basicity of Functional Groups by alpha-Fluorine-Containing Functions and its Implications for Lipophilicity and Bioisosterism
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Modulation of the H-Bond Basicity of Functional Groups by alpha-Fluorine-Containing Functions and its Implications for Lipophilicity and Bioisosterism

机译:用含α-氟的函数的官能团的H键合理的调节及其对亲脂性和生物血管is的影响

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摘要

Modulation of the H-bond basicity (pK(HB)) of various functional groups (FGs) by attaching fluorine functions and its impact on lipophilicity and bioisosterism considerations are described. In general, H/F replacement at the alpha-position to H-bond acceptors leads to a decrease of the pK(HB) value, resulting, in many cases, in a dramatic increase in the compounds' lipophilicity (log P-o/w). In the case of alpha-CF2H, we found that these properties may also be affected by intramolecular H-bonds between CF2H and the FG. A computational study of ketone and sulfone series revealed that alpha-fluorination can significantly affect overall polarity, charge distribution, and conformational preference. The unique case of alpha-di- and trifluoromethyl ketones, which exist in octanol/ water phases as ketone, hemiketal, and gem-diol forms, in equilibrium, prevents direct log P-o/w determination by conventional methods, and therefore, the specific log P-o/w values of these species were determined directly, for the first time, using Linclau's F-19 NMR-based method.
机译:描述了通过附加氟功能对各种官能团(FG)的氢键碱度(pK(HB))的调节及其对亲脂性和生物同构性的影响。一般来说,H/F在H键受体的α位置替换会导致pK(HB)值降低,在许多情况下,导致化合物的亲脂性(对数P-o/w)显著增加。对于α-CF2H,我们发现这些性质也可能受到CF2H和FG之间分子内氢键的影响。对酮和砜系列的计算研究表明,α-氟化可以显著影响整体极性、电荷分布和构象偏好。α-二甲基和三氟甲基酮以酮、半缩酮和gem二醇的形式存在于辛醇/水相中,它们在平衡状态下存在,这一独特情况阻止了传统方法直接测定对数P-o/w,因此,首次使用Linclau的F-19核磁共振法直接测定了这些物种的特定对数P-o/w值。

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  • 来源
    《Journal of Medicinal Chemistry》 |2021年第8期|共16页
  • 作者单位

    Israel Inst Biol Res Dept Organ Chem IL-74100 Ness Ziona Israel;

    Technion Israel Inst Technol Schulich Fac Chem IL-3200008 Haifa Israel;

    Israel Inst Biol Res Dept Organ Chem IL-74100 Ness Ziona Israel;

    Israel Inst Biol Res Dept Organ Chem IL-74100 Ness Ziona Israel;

    Israel Inst Biol Res Dept Organ Chem IL-74100 Ness Ziona Israel;

    Israel Inst Biol Res Dept Phys Chem IL-74100 Ness Ziona Israel;

    Israel Inst Biol Res Dept Organ Chem IL-74100 Ness Ziona Israel;

    Israel Inst Biol Res Dept Organ Chem IL-74100 Ness Ziona Israel;

    Israel Inst Biol Res Dept Organ Chem IL-74100 Ness Ziona Israel;

    Technion Israel Inst Technol Schulich Fac Chem IL-3200008 Haifa Israel;

    Israel Inst Biol Res Dept Organ Chem IL-74100 Ness Ziona Israel;

    Israel Inst Biol Res Dept Pharmacol IL-74100 Ness Ziona Israel;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 药学;
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