1210348-16-5Relevant academic research and scientific papers
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.
Preparation method of edoxaban tosylate and isomers thereof
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Paragraph 0122; 0133-0134, (2021/02/06)
The invention discloses a preparation method of edoxaban tosylate and isomers thereof. By taking a compound (I) and a compound (II) as starting materials, the method can be used to prepare any one ofhigh-purity edoxaban tosylate (1S, 2R, 4S), edoxaban tosylate enantiomers (1R, 2S, 4R), edoxaban tosylate epimers (1R, 2R, 4S) and edoxaban tosylate epimers (1S, 2S, 4R). Effective guarantee is provided for process research and quality control of the edoxaban tosylate bulk drug and related preparations, the preparation method is suitable for commercialization, the produced edoxaban tosylate bulk drug is high in purity and has great significance and practical value, and the production of the edoxaban tosylate bulk drug and the control of drug quality are facilitated.
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.
An efficient stereoselective synthesis of six stereoisomers of 3, 4-diaminocyclohexane carboxamide as key intermediates for the synthesis of factor Xa inhibitors
Wang, Xin,Ma, Mingliang,Reddy, Alavala Gopi Krishna,Hu, Wenhao
, p. 1381 - 1388 (2017/02/18)
An efficient stereoselective route for the preparation of six stereoisomers of tert-butyl ((1R, 2S, 5S)-2-amino-5-(dimethylcarbamoyl)cyclohexyl)carbamate 1 starting from simple 3-cyclohexene-1-carboxylic acid has been described. Stereochemistry of the tit
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.
OXAMIDE DERIVATIVE
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, (2012/03/12)
The present invention provides an isomer of N1-(5-chloropyridin-2-yl)-N2-((1S,2R,4S)-4-[(dimethylamino)carbonyl]-2-{[(5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-yl)carbonyl]amino}cyclohexyl)ethanediamide represented by formula (II) or a salt thereof, or a solvate thereof. Such an isomer or a salt thereof, or a solvate thereof is useful as a standard in a test for inspecting impurities in a pharmaceutical composition containing a compound represented by formula (II) or a salt thereof, or a hydrate thereof. The present invention also relates to a substantially pure compound that is useful as a preventive and/or therapeutic drug for thrombotic diseases, and a pharmaceutical composition containing the substantially pure compound.
