- A convenient synthesis of a lymphocyte function-associated antigen-1 (LFA-1) antagonist of 'Compound 4'
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The lymphocyte function-associated antigen-1 (LFA-1) antagonist of 'Compound 4' was synthesised by a convenient route using cheap, commercially available starting materials and catalysts under mild reaction conditions and by easily handled reactions. The total yield in the preparation of 'Compound 4' was more than 38% via Sonogashira coupling of an iodide and an alkyne, reduction of the alkyne catalysed by Raney nickel and later steps involving hydrolysis of an ester, condensation of an acid and an amine and a final hydrolysis of an ester.
- Xu, Sheng,Zhou, Guo-Chun
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- Identification of an imidazopyridine scaffold to generate potent and selective TYK2 inhibitors that demonstrate activity in an in vivo psoriasis model
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Herein we report identification of an imidazopyridine class of potent and selective TYK2 inhibitors, exemplified by prototype 6, through constraint of the rotatable amide bond connecting the pyridine and aryl rings of compound 1. Further optimization led to generation of compound 30 that potently inhibits the TYK2 enzyme and the IL-23 pathway in cells, exhibits selectivity against cellular JAK2 activity, and has good pharmacokinetic properties. In mice, compound 30 demonstrated dose-dependent reduction of IL-17 production in a PK/PD model as well as in an imiquimod-induced psoriasis model. In this efficacy model, the IL-17 decrease was accompanied by a reduction of ear thickness indicating the potential of TYK2 inhibition as a therapeutic approach for psoriasis patients.
- Liang, Jun,Van Abbema, Anne,Balazs, Mercedesz,Barrett, Kathy,Berezhkovsky, Leo,Blair, Wade S.,Chang, Christine,Delarosa, Donnie,DeVoss, Jason,Driscoll, Jim,Eigenbrot, Charles,Goodacre, Simon,Ghilardi, Nico,MacLeod, Calum,Johnson, Adam,Bir Kohli, Pawan,Lai, Yingjie,Lin, Zhonghua,Mantik, Priscilla,Menghrajani, Kapil,Nguyen, Hieu,Peng, Ivan,Sambrone, Amy,Shia, Steven,Smith, Jan,Sohn, Sue,Tsui, Vickie,Ultsch, Mark,Williams, Karen,Wu, Lawren C.,Yang, Wenqian,Zhang, Birong,Magnuson, Steven
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p. 4370 - 4376
(2017/09/12)
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- Preparation of fluorous Yamaguchi reagents and evaluation of their reactivity in esterification
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Fluorous Yamaguchi (FY) reagents bearing a perfluoroalkyl chain were prepared and employed in esterification reactions; the yields were similar to those obtained with the traditional Yamaguchi (TY) reagent. Fluorous benzoic acids derived from the FY reagents were separated easily after the reaction. GC analysis revealed that the initial rates of reaction with the FY reagents were higher than those with the TY reagent. The acidities of benzoic acids produced from the FY and TY reagents were predicted by DFT to be similar (1.20 and 0.96, respectively).
- Nishio, Yuya,Kawazu, Akari,Hirano, Shun,Matsubara, Hiroshi
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p. 720 - 725
(2016/01/15)
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- Lead optimization of a 4-aminopyridine benzamide scaffold to identify potent, selective, and orally bioavailable TYK2 inhibitors
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Herein we report our lead optimization effort to identify potent, selective, and orally bioavailable TYK2 inhibitors, starting with lead molecule 3. We used structure-based design to discover 2,6-dichloro-4-cyanophenyl and (1R,2R)-2-fluorocyclopropylamide modifications, each of which exhibited improved TYK2 potency and JAK1 and JAK2 selectivity relative to 3. Further optimization eventually led to compound 37 that showed good TYK2 enzyme and interleukin-12 (IL-12) cell potency, as well as acceptable cellular JAK1 and JAK2 selectivity and excellent oral exposure in mice. When tested in a mouse IL-12 PK/PD model, compound 37 showed statistically significant knockdown of cytokine interferon-γ (IFNγ), suggesting that selective inhibition of TYK2 kinase activity might be sufficient to block the IL-12 pathway in vivo.
- Liang, Jun,Van Abbema, Anne,Balazs, Mercedesz,Barrett, Kathy,Berezhkovsky, Leo,Blair, Wade,Chang, Christine,Delarosa, Donnie,Devoss, Jason,Driscoll, Jim,Eigenbrot, Charles,Ghilardi, Nico,Gibbons, Paul,Halladay, Jason,Johnson, Adam,Kohli, Pawan Bir,Lai, Yingjie,Liu, Yanzhou,Lyssikatos, Joseph,Mantik, Priscilla,Menghrajani, Kapil,Murray, Jeremy,Peng, Ivan,Sambrone, Amy,Shia, Steven,Shin, Young,Smith, Jan,Sohn, Sue,Tsui, Vickie,Ultsch, Mark,Wu, Lawren C.,Xiao, Yisong,Yang, Wenqian,Young, Judy,Zhang, Birong,Zhu, Bing-Yan,Magnuson, Steven
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p. 4521 - 4536
(2013/07/25)
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- PYRIDINE COMPOUNDS AND USES THEREOF
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The present invention is directed to pyridine compounds of Formula (I). Separate aspects of the invention are directed to pharmaceutical compositions comprising said compounds and uses of the compounds as therapeutic agents treating neurological and psych
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- IMIDAZOPYRIDINE COMPOUNDS, COMPOSITIONS AND METHODS OF USE
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The invention provides compounds of Formulas Ia-Ib, stereoisomers or pharmaceutically acceptable salts thereof, wherein A, X, R1, R2, R4, R5 and R16 are defined herein, a pharmaceutical composition that includes a compound of Formulas Ia-Ib and a pharmaceutically acceptable carrier, adjuvant or vehicle, and methods of using the compound or composition in therapy.
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- JANUS KINASE INHIBITOR COMPOUNDS AND METHODS
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The invention provides compounds of Formula I, stereoisomers or pharmaceutically acceptable salts thereof, wherein A, B, D, R1, R2, R4 and R5 are defined herein, a pharmaceutical composition that includes a compound of Formula I and methods of use thereof
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Page/Page column 52
(2010/12/29)
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- Antagonists for treatment of CD/11CD18 adhesion receptor mediated disorders
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Compounds of the general structure D-L-B-(AA), for example (A), that are useful for treating Mac-1 or LFA-1-mediated disorders such as inflammatory disorders, allergies, and autoimmune diseases are provided.
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Page/Page column 45
(2010/02/13)
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- MODULATORS OF CELLULAR ADHESION
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The present invention provides compounds having formula (I): and pharmaceutically acceptable derivatives thereof, wherein R1-R4, n, p, A, B, D, E, L and AR1 are as described generally and in classes and subclasses herein, and additionally provides pharmaceutical compositions thereof, and methods for the use thereof for the treatment of disorders mediated by the CD11/CD18 family of cellular adhesion molecules (e.g., LFA-1).
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Page/Page column 101-103
(2010/02/11)
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