Route to Prolonged Residence Time at the Histamine H1 Receptor: Growing from Desloratadine to Rupatadine
摘要:
Drug-target binding kinetics are an important predictor of in vivo drug efficacy, yet the relationship between ligand structures and their binding kinetics is often poorly understood. We show that both rupatadine (1) and desloratadine (2) have a long residence time at the histamine H-1 receptor (H1R). Through development of a [H-3]levocetirizine radiolabel, we find that the residence time of 1 exceeds that of 2 more than 10-fold. This was further explored with 22 synthesized rupatadine and desloratadine analogues. Methylene-linked cycloaliphatic or beta-branched substitutions of desloratadine increase the residence time at the H1R, conveying a longer duration of receptor antagonism. However, cycloaliphatic substituents directly attached to the piperidine amine (i.e., lacking the spacer) have decreased binding affinity and residence time compared to their methylene-linked structural analogues. Guided by docking studies, steric constraints within the binding pocket are hypothesized to explain the observed differences in affinity and binding kinetics between analogues.
[EN] TRICYCLIC COMPOUND AND PHARMACEUTICAL USE THEREOF<br/>[FR] COMPOSÉ TRICYCLIQUE ET SON UTILISATION PHARMACEUTIQUE<br/>[KO] 삼환식 화합물 및 이의 약학적 용도
申请人:JD BIOSCIENCE INC
公开号:WO2021086133A1
公开(公告)日:2021-05-06
본 발명의 화학식 1로 표시되는 삼환식 유도체 또는 이의 약학적으로 허용가능한 염인 화합물은 세로토닌 활성을 저해하는 효과가 우수하므로, 이를 포함하는 약학적 조성물은 세로토닌 활성화와 관련된 대사성 질환 등의 예방 또는 치료에 유용하게 사용될 수 있다.
Route to Prolonged Residence Time at the Histamine H<sub>1</sub> Receptor: Growing from Desloratadine to Rupatadine
作者:Reggie Bosma、Zhiyong Wang、Albert J. Kooistra、Nick Bushby、Sebastiaan Kuhne、Jelle van den Bor、Michael J. Waring、Chris de Graaf、Iwan J. de Esch、Henry F. Vischer、Robert J. Sheppard、Maikel Wijtmans、Rob Leurs
DOI:10.1021/acs.jmedchem.9b00447
日期:2019.7.25
Drug-target binding kinetics are an important predictor of in vivo drug efficacy, yet the relationship between ligand structures and their binding kinetics is often poorly understood. We show that both rupatadine (1) and desloratadine (2) have a long residence time at the histamine H-1 receptor (H1R). Through development of a [H-3]levocetirizine radiolabel, we find that the residence time of 1 exceeds that of 2 more than 10-fold. This was further explored with 22 synthesized rupatadine and desloratadine analogues. Methylene-linked cycloaliphatic or beta-branched substitutions of desloratadine increase the residence time at the H1R, conveying a longer duration of receptor antagonism. However, cycloaliphatic substituents directly attached to the piperidine amine (i.e., lacking the spacer) have decreased binding affinity and residence time compared to their methylene-linked structural analogues. Guided by docking studies, steric constraints within the binding pocket are hypothesized to explain the observed differences in affinity and binding kinetics between analogues.