1210348-16-5Relevant articles and documents
A Remarkable Difference That One Fluorine Atom Confers on the Mechanisms of Inactivation of Human Ornithine Aminotransferase by Two Cyclohexene Analogues of γ-Aminobutyric Acid
Butrin, Arseniy,Catlin, Daniel S.,Doubleday, Peter F.,Kelleher, Neil L.,Liu, Dali,Shen, Sida,Silverman, Richard B.,Wawrzak, Zdzislaw,Weerawarna, Pathum M.,Zhu, Wei
, (2020)
Human ornithine aminotransferase (hOAT), a pyridoxal 5′-phosphate-dependent enzyme, plays a critical role in the progression of hepatocellular carcinoma (HCC). Pharmacological selective inhibition of hOAT has been shown to be a potential therapeutic approach for HCC. Inspired by the discovery of the nonselective aminotransferase inactivator (1R,3S,4S)-3-amino-4-fluoro cyclopentane-1-carboxylic acid (1), in this work, we rationally designed, synthesized, and evaluated a novel series of fluorine-substituted cyclohexene analogues, thereby identifying 8 and 9 as novel selective hOAT time-dependent inhibitors. Intact protein mass spectrometry and protein crystallography demonstrated 8 and 9 as covalent inhibitors of hOAT, which exhibit two distinct inactivation mechanisms resulting from the difference of a single fluorine atom. Interestingly, they share a similar turnover mechanism, according to the mass spectrometry-based analysis of metabolites and fluoride ion release experiments. Molecular dynamics (MD) simulations and electrostatic potential (ESP) charge calculations were conducted, which elucidated the significant influence of the one-fluorine difference on the corresponding intermediates, leading to two totally different inactivation pathways. The novel addition-aromatization inactivation mechanism for 9 contributes to its significantly enhanced potency, along with excellent selectivity over other aminotransferases.
FLUORINE SUBSTITUTED CECLOHEXENE ANALOGOUES OF GAMMA-AMINOBUTYRIC ACID (GABA)
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Paragraph 00117; 00134; 00207; 00216, (2021/04/30)
Disclosed are amino, fluoro-sub stituted cyclohexene carboxylic acid compounds. The disclosed compounds and compositions thereof may be utilized in methods for modulating ornithine aminotransferase (OAT) activity, including methods for treating diseases or disorders associated with OAT activity or expression such as cell proliferative diseases and disorders.
HETEROARYL COMPOUNDS AND USES THEREOF
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, (2014/09/29)
The present invention relates to compounds useful as inhibitors of protein kinases, containing a cysteine residue in the ATP binding site. The invention further provides for pharmaceutically acceptable compositions comprising therapeutically effective amounts of one or more of the protein kinase inhibitor compounds and methods of using said compositions in the treatment of cancers and carcinomas.