作者:Marie C. Barret、Purvi H. Bhatia、Gabriele Kociok-Köhn、Kieran C. Molloy
DOI:10.1007/s11243-014-9830-0
日期:2014.8
The copper aminotropones Cu[ON(R′)C7H4R-4]2 [R = H, R′ = Me (13), Et (14), n-Pr (15), n-Bu (16), Bz (17), MenOCH2CH2 (20); R = i-Pr, R′ = Me (18), n-Pr (19), MenOCH2CH2 (21)] have been prepared from the corresponding aminotropones HN(R′)OC7H4R-4 (1–7) by reacting with copper(II) acetate in aqueous ethanol. 20, 21 contain the flavourant, menthol, as part of the ligand. The structures of 5 (R = H, R′ = Bz), a hydrogen-bonded dimer, 14 and 20, both incorporating square-planar, four-coordinate copper centres, have been determined by X-ray crystallography. The antibacterial activities of complexes 13, 17, 20 and 21 have been assayed against Staphylococcus waneri, an in vitro model of plaque inhibition effects, and found to be more active than a commercial toothpaste formulation, but less active than the O,O-chelated copper(II) complex of ethylmaltol.
铜氨基托酮类化合物 Cu[ON(R′)C7H4R-4]2 [R = H,R′ = Me (13)、Et (14)、n-Pr (15)、n-Bu (16)、Bz (17)、MenOCH2CH2 (20);R = i-Pr,R′ = Me (18)、n-Pr (19)、MenOCH2CH2 (21)] 是通过相应的氨基托酮 HN(R′)OC7H4R-4 (1-7) 与乙酸铜(II)在含水乙醇中反应制备而成。20和21的配体中含有食用香料薄荷醇。通过X射线晶体学确定了化合物5 (R = H,R′ = Bz)的氢键二聚体结构,以及14和20的平面四配位铜中心结构。对化合物13、17、20和21针对牙菌斑抑制效果的体外模型菌株金黄色葡萄球菌进行了抗菌活性测定,结果表明它们的活性高于市售牙膏配方,但低于乙基麦芽酚的O,O-螯合铜(II)配合物。