Identification and Mitigation of Reactive Metabolites of 2-Aminoimidazole-Containing Microsomal Prostaglandin E Synthase-1 Inhibitors Terminated Due to Clinical Drug-Induced Liver Injury
摘要:
Two 2-aminoimidazole-based inhibitors, LY3031207 (1) and LY3023703 (2), of the microsomal prostaglandin E synthase-1 (mPGES-1) enzyme were found to cause drug-induced liver injury (DILI) in humans. We studied imidazole ring substitutions to successfully mitigate reactive metabolite (RM) formation. These studies support the conclusion that RM formation may play a role in the observations of DILI and the consideration of 2-aminoimidazoles as structure alerts, due to the high likelihood of bioactivation to generate RMs.
Structure–Activity Relationship in the Leucettine Family of Kinase Inhibitors
作者:Tania Tahtouh、Emilie Durieu、Benoît Villiers、Céline Bruyère、Thu Lan Nguyen、Xavier Fant、Kwang H. Ahn、Leepakshi Khurana、Emmanuel Deau、Mattias F. Lindberg、Elodie Sévère、Frédéric Miege、Didier Roche、Emmanuelle Limanton、Jean-Martial L’Helgoual’ch、Guillaume Burgy、Solène Guiheneuf、Yann Herault、Debra A. Kendall、François Carreaux、Jean-Pierre Bazureau、Laurent Meijer
DOI:10.1021/acs.jmedchem.1c01141
日期:2022.1.27
2-aminoimidazolin-4-ones derived from the marine sponge alkaloid Leucettamine B, have been developed as pharmacological inhibitors of DYRKs (dual specificity, tyrosine phosphorylation regulated kinases) and CLKs (cdc2-like kinases). We report here on the synthesis and structure–activityrelationship (SAR) of 68 Leucettines. Leucettines were tested on 11 purified kinases and in 5 cellular assays: (1) CLK1 pre-mRNA
serotonin 2A (5-HT2A) receptor, including psychedelics, antidepressants, and antipsychotics. This study investigates the 5-HT2A receptor-binding properties of a series of novel compounds with an amino-phenylmethylene-imidazolone (APMI) core structure. Two compounds (2a and 2c) demonstrated significant 5-HT2A receptor-binding affinity without agonistic activity, instead displaying antagonistic effects. Structurally
A microwave-assisted stereoselective synthesis of polyandrocarpamines A and B
作者:Rohan A. Davis、Paul S. Baron、Juliette E. Neve、Carleen Cullinane
DOI:10.1016/j.tetlet.2008.12.010
日期:2009.2
A stereoselective synthesis of the marine natural products, polyandrocarpamines A and B, has been achieved using a high-yielding one-step aldol condensation reaction under microwave conditions. The structures of both synthetic compounds were confirmed following 1 D and 2D NMR, UV, IR and MS spectral analysis, and by comparison with literature data. Both synthetic natural products were assigned Z geometry about their exocyclic double bond on the basis of (13)C/(1)H long-range coupling constants, which were measured using a gHSQMBC experiment. Polyandrocarpamines A and B were evaluated for their cytotoxicity towards the tumour cell lines, MCF-7 (breast), H460 (lung) and SF268 (central nervous system). Polyandrocarpamine A displayed selective cytotoxicity towards the SF268 cell line with a GI(50) value of 65 mu M. (C) 2008 Elsevier Ltd. All rights reserved.
THE ACTION OF NITROUS ACID UPON CREATININE AND SOME OF ITS DERIVATIVES
作者:ISIDOR GREENWALD、IRVING LEVY
DOI:10.1021/jo01162a013
日期:1948.7
Prokof'ew; Schwatschkin, Zhurnal Obshchei Khimii, 1955, vol. 25, p. 975,978; engl. Ausg. S. 939, 941