Difluoromethyl Bioisostere: Examining the “Lipophilic Hydrogen Bond Donor” Concept
作者:Yossi Zafrani、Dina Yeffet、Gali Sod-Moriah、Anat Berliner、Dafna Amir、Daniele Marciano、Eytan Gershonov、Sigal Saphier
DOI:10.1021/acs.jmedchem.6b01691
日期:2017.1.26
compounds containing the difluoromethyl group, as it is considered a lipophilic hydrogen bond donor that may act as a bioisostere of hydroxyl, thiol, or amine groups. A series of difluoromethyl anisoles and thioanisoles was prepared and their druglike properties, hydrogen bonding, and lipophilicity were studied. The hydrogen bond acidity parameters A (0.085–0.126) were determined using Abraham’s solute 1H
人们对含二氟甲基的有机化合物越来越感兴趣,因为它被认为是亲脂性的氢键供体,可以作为羟基,巯基或胺基的生物等排体。制备了一系列的二氟甲基茴香醚和硫代苯甲醚,并研究了它们的类药物性质,氢键和亲脂性。氢键酸度参数A(0.085–0.126)使用亚伯拉罕的溶质1 H NMR分析确定。发现二氟甲基基团以与硫酚,苯胺和胺基团相似的规模充当氢键供体,但不如羟基基团那样。尽管二氟被认为是亲油性增强组,实验Δlog的范围 P(水-辛醇)值日志( P(XCF 2 H)– log P(XCH 3))范围从-0.1到+0.4。对于这两个参数,在测量值和Hammettσ常数之间发现线性相关。这些结果可能有助于合理设计含有二氟甲基部分的药物。