- Screening of a Custom-Designed Acid Fragment Library Identifies 1-Phenylpyrroles and 1-Phenylpyrrolidines as Inhibitors of Notum Carboxylesterase Activity
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The Wnt family of proteins are secreted signaling proteins that play key roles in regulating cellular functions. Recently, carboxylesterase Notum was shown to act as a negative regulator of Wnt signaling by mediating the removal of an essential palmitoleate. Here we disclose two new chemical scaffolds that inhibit Notum enzymatic activity. Our approach was to create a fragment library of 250 acids for screening against Notum in a biochemical assay followed by structure determination by X-ray crystallography. Twenty fragments were identified as hits for Notum inhibition, and 14 of these fragments were shown to bind in the palmitoleate pocket of Notum. Optimization of 1-phenylpyrrole 20, guided by structure-based drug design, identified 20z as the most potent compound from this series. Similarly, the optimization of 1-phenylpyrrolidine 8 gave acid 26. This work demonstrates that inhibition of Notum activity can be achieved by small, drug-like molecules possessing favorable in vitro ADME profiles.
- Mahy, William,Patel, Mikesh,Steadman, David,Woodward, Hannah L.,Atkinson, Benjamin N.,Svensson, Fredrik,Willis, Nicky J.,Flint, Alister,Papatheodorou, Dimitra,Zhao, Yuguang,Vecchia, Luca,Ruza, Reinis R.,Hillier, James,Frew, Sarah,Monaghan, Amy,Costa, Artur,Bictash, Magda,Walter, Magnus W.,Jones, E. Yvonne,Fish, Paul V.
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p. 9464 - 9483
(2020/10/19)
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- BORON-CONTAINING CYCLIC EMISSIVE COMPOUNDS AND COLOR CONVERSION FILM CONTAINING THE SAME
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The present disclosure relates to novel photoluminescent complexes comprising a BODIPY moiety covalently bonded to a blue light absorbing moiety, a color conversion film comprising the photoluminescent complex, and a back-light unit using the same.
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Page/Page column 147; 148
(2020/10/21)
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- NOVEL PROCESS
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The present invention relates to novel intermediates and further to the use of said intermediates in processes for the preparation of indolinone derivatives, in particular 3- pyrrole substituted 2-indolinones having amide moieties on the pyrrole ring. Such compounds are useful in die treatment of abnormal cell growth, such as cancer, in mammals.
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Page/Page column 45-46
(2010/04/03)
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- Development of 2,6-carboxy-substituted boron dipyrromethene (BODIPY) as a novel scaffold of ratiometric fluorescent probes for live cell imaging
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Ratiometric fluorescent probes based on boron dipyrromethene (BODIPY) were developed based on a novel design strategy, in which a change of the electron-withdrawing character of the 2,6-substituents resulting from reaction with a target molecule generates a fluorescence wavelength change. The Royal Society of Chemistry 2009.
- Komatsu, Toru,Urano, Yasuteru,Fujikawa, Yuuta,Kobayashi, Tomonori,Kojima, Hirotatsu,Terai, Takuya,Hanaoka, Kenjiro,Nagano, Tetsuo
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supporting information; experimental part
p. 7015 - 7017
(2010/04/25)
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