Carboxamides vs. methanimines: Crystal structures, binding interactions, photophysical studies, and biological evaluation of (indazole-5-yl)methanimines as monoamine oxidase B and acetylcholinesterase inhibitors
作者:Nikolay T. Tzvetkov、Hans-Georg Stammler、Maya G. Georgieva、Daniela Russo、Immacolata Faraone、Aneliya A. Balacheva、Silvia Hristova、Atanas G. Atanasov、Luigi Milella、Liudmil Antonov、Marcus Gastreich
DOI:10.1016/j.ejmech.2019.06.041
日期:2019.10
carboxamide analogs 11–16. Amplified photophysical evaluation of compounds 17 and 20, including single X-ray analysis, photochemical experiments, and quantum-chemical calculations, provided insights into their more favourable isomeric forms and structural features, which contribute to their biologically active form and promising drug-like properties.
首次进行了一项综合研究,比较了两种与结构相关的物质类别,即吲唑-5-甲酰胺(11 – 16)和(吲唑-5-基)甲亚胺(17 – 22)。这两种化学实体都是有效的,选择性的和可逆的MAO-B抑制剂,因此,可作为开发针对帕金森氏病(PD)和其他神经系统疾病的候选药物的有前途的先导结构。化合物15(K i = 170 pM,SI = 25907)和17(K i = 270 pM,SI = 16340)是这两个系列中最有效和最具选择性的MAO-B抑制剂。为了研究多靶标抑制活性,进一步筛选了所有化合物对人AChE和BuChE酶的效力。发现化合物15是所有系列中最有效和最具选择性的AChE抑制剂(h AChE IC 50 = 78.3±1.7μM)。而且,如初步细胞毒性筛选所确定的,化合物11和17没有药物引起的肝毒性的风险,并且具有更宽的安全范围。由HYDE分析支持的对人MAO-B酶结合位点的分