Cytochrome P450 2C9 Type II Binding Studies on Quinoline-4-Carboxamide Analogues
作者:Chi-Chi Peng、Jonathan L. Cape、Tom Rushmore、Gregory J. Crouch、Jeffrey P. Jones
DOI:10.1021/jm8011257
日期:2008.12.25
CYP2C9 is a significant P450 protein responsible for drug metabolism. With the increased use of heterocyclic compounds in drug design, a rapid and efficient predrug screening of these potential type II binding compounds is essential to avoid adverse drug reactions. To understand binding modes, we use quinoline-4-carboxamide analogues to study the factors that determine the structure-activity relationships. The results of this study suggest that the more accessible pyridine with the nitrogen para to the linkage can coordinate directly with the ferric heme iron, but this is not seen for the meta or ortho isomers. The pi-cation interaction of the naphthalene moiety and Arg 108 residue may also assist in stabilizing Substrate binding within the active-site cavity. The type II substrate binding affinity is determined by the combination of steric, electrostatic, and hydrophobicity factors; meanwhile, it is enhanced by the strength of lone pair electrons coordination with the heme iron.
Thienopyrimidine Derivatives as GPR55 Receptor Antagonists: Insight into Structure–Activity Relationship
作者:Laura Figuerola-Asencio、Paula Morales、Pingwei Zhao、Dow P. Hurst、Sommayah S. Sayed、Katsuya L. Colón、María Gómez-Cañas、Javier Fernández-Ruiz、Mitchell P. Croatt、Patricia H. Reggio、Mary E. Abood、Nadine Jagerovic
DOI:10.1021/acsmedchemlett.2c00325
日期:2023.1.12
GPR55 is an orphan G-protein coupled receptor involved in various pathophysiological conditions. However, there are only a few noncannabinoid GPR55 ligands reported so far. The lack of potent and selective GPR55 ligands precludes a deep exploration of this receptor. The studies presented here focused on a thienopyrimidine scaffold based on the GPR55 antagonist ML192, previously discovered by high-throughput