Targeting Cytochrome P450 (CYP) 1B1 Enzyme with Four Series of A-Ring Substituted Estrane Derivatives: Design, Synthesis, Inhibitory Activity, and Selectivity
作者:Raphaël Dutour、Jenny Roy、Francisco Cortés-Benítez、René Maltais、Donald Poirier
DOI:10.1021/acs.jmedchem.8b00907
日期:2018.10.25
CYP1B1 inhibitors over CYP1A1, we synthesized four series of estrane derivatives: (1) 12 estrone (E1)- and 17β-estradiol (E2)-derivatives bearing a 3- or a 4-pyridinyl core at C2, C3, or C4, (2) eight estrane derivatives with different sulfur groups at C3, (3) 19 E1- and E2-derivatives bearing distinct aryls at C2, and (4) five D-ring derivatives. E2-derivatives were more active than oxidized E1-analogues
细胞色素P450(CYP)1B1参与致癌物的生物激活和耐药性。为了获得相对于CYP1A1的选择性CYP1B1抑制剂,我们合成了四个系列的雌激素衍生物:(1)12个雌酮(E1)-和17β-雌二醇(E2)-衍生物,在C2,C3或C3处带有3-或4-吡啶基核心C4,(2)在C3具有八个不同硫基的雌激素衍生物,(3)在C2具有不同芳基的19个E1-和E2-衍生物,以及(4)五个D环衍生物。E2衍生物比氧化的E1类似物更具活性,因此突出了17β-OH在与CYP1B1相互作用中的关键作用。2-(4-氟苯基)-E2是最好的CYP1B1抑制剂(IC 50= 0.24μM),相对于CYP1A1的选择性指数(SI)为20。此外,添加C17α-乙炔基作为D环修饰可将选择性指数提高至25,而活性几乎没有损失(IC 50 = 0.37μM)。我们的对接结果表明,这些化合物比CYP1A1更适合CYP1B1结合位点。