作者:Letitia Meiring、Jacobus P. Petzer、Anél Petzer
DOI:10.1016/j.bmcl.2013.08.071
日期:2013.10
In the present study, a series of 3,4-dihydro-2(1H)-quinolinone derivatives were synthesized and evaluated as inhibitors of recombinant human monoamine oxidase (MAO) A and B. The 3,4-dihydro-2(1H)-quinolinone derivatives are structurally related to a series of coumarin (1-benzopyran-2-one) derivatives which have been reported to act as MAO-B inhibitors. The results document that the quinolinones are
在本研究中,合成了一系列3,4-二氢-2(1 H)-喹啉酮衍生物,并对其作为重组人单胺氧化酶(MAO)A和B的抑制剂进行了评估。3,4-二氢-2(1)H)-喹啉酮衍生物在结构上与一系列香豆素(1-苯并吡喃-2-酮)衍生物有关,据报道它们起着MAO-B抑制剂的作用。结果证明,喹啉酮类是高效和选择性的MAO-B抑制剂,大多数同系物在纳摩尔范围内表现出IC 50值。最有效的MAO-B抑制剂7-(3-溴苄氧基)-3,4-二氢-2(1 H)-喹啉酮的IC 50为值2.9 nM,对MAO-B的选择性是MAO-A同种型的2750倍。对MAO-B抑制的构效关系的分析表明,与在C6上进行取代相比,在3,4-二氢-2(1 H)-喹啉酮骨架的C7位置上的取代导致更有效的抑制。在这一点上,C 7上的苄氧基取代基比该位置上的苯乙氧基和苯基丙氧基取代更有利。可以得出结论,C7取代的3,4-二氢-2(1 H)-喹啉酮是治疗帕金森氏病的有前途的线索。