4,4-Disubstituted Piperidine High-Affinity NK<sub>1</sub> Antagonists: Structure−Activity Relationships and <i>in Vivo</i> Activity
作者:Graeme I. Stevenson、Ian Huscroft、Angus M. MacLeod、Christopher J. Swain、Margaret A. Cascieri、Gary G. Chicchi、Michael I. Graham、Timothy Harrison、Fintan J. Kelleher、Marc Kurtz、Tamara Ladduwahetty、Kevin J. Merchant、Joseph M. Metzger、D. E. MacIntyre、Sharon Sadowski、Balbinder Sohal、Andrew P. Owens
DOI:10.1021/jm980376b
日期:1998.11.1
high-affinity NK1 antagonists based on the 4,4-disubstituted piperidine ring system. Further structure-activity studies have now established that for high NK1 affinity the benzyl ether side chain must be 3,5-disubstituted and highly lipophilic, the optimal side chain being the 3, 5-bis(trifluoromethyl)benzyl ether, 12 (hNK1 IC50 = 0.95 nM). Additional studies have shown that this class of NK1 antagonist tolerates
这些实验室的先前报道的研究描述了基于4,4-二取代哌啶环系统的一系列新型高亲和力NK1拮抗剂的设计。进一步的结构活性研究现已确定,对于高NK1亲和力,苄基醚侧链必须为3,5-二取代且高度亲脂性,最佳侧链为3,5-双(三氟甲基)苄基醚12(hNK1 IC50 = 0.95 nM)。进一步的研究表明,这类NK1拮抗剂可耐受哌啶氮上更广泛的取代基,包括酰基(38)(hNK1 IC50 = 5.3 nM)和磺酰基(39)(hNK1 IC50 = 5.7 nM)衍生物。经过初步的药代动力学分析,在树脂毒素诱导的血管渗漏模型中选择了两种化合物(32和43)用于体内研究,