Five novel 1H-pyrrolo[2,3-b]pyridine or 1H-pyrazolo[3,4-b]pyridine derivatives, with a methylene, sulfur, sulfoxide or cyclopropyl group as a linker, were designed, synthesized and biologically evaluated against c-Met and ALK. The development of these methods of compound synthesis may provide an important reference for the construction of novel 7-azaindole and 7-azaindazole derivatives with a single atom linker. The enzyme assay and cell assay in vitro showed that compound 9 displayed strong c-Met kinase inhibition with IC50 of 22.8nM, moderate ALK kinase inhibition, and strong cell inhibition with MKN-45 IC50 of 329nM and EBC-1 IC50 of 479nM. In order to find the better candidate compounds, compounds 8, 9 and 10 have been selected as tool compounds for further optimization.
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http://dx.doi.org/10.1016/j.bioorg.2016.02.009 | DOI Listing |
Bioorg Chem
November 2024
Department of Pharmaceutical Chemistry, ISF College of Pharmacy, GT Road, Ghal Kalan, Moga-142001, Punjab, India.
The JAK-STAT signalling pathway is primarily involved in cytokine signalling and induces various factors namely, erythropoietin, thrombopoietin, interferons, interleukins, and granulocyte colony-stimulating factors. These factors tremendously influenced understanding human health and illness, specifically cancer. Inhibiting the JAK/STAT pathway offers enormous therapeutic promises against cancer.
View Article and Find Full Text PDFJ Med Chem
November 2023
Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
As a key rate-limiting enzyme in the synthesis of pyrimidine nucleotides, human dihydroorotate dehydrogenase (DHODH) is considered a known target for the treatment of autoimmune diseases, including inflammatory bowel disease (IBD). Herein, BAY 41-2272 with a 1-pyrazolo[3,4-]pyridine scaffold was identified as an DHODH inhibitor by screening an active compound library containing 5091 molecules. Further optimization led to 2-(1-(2-chloro-6-fluorobenzyl)-1-pyrrolo[2,3-]pyridin-3-yl)-5-cyclopropylpyrimidin-4-amine (, which was found to be the most promising and drug-like compound with potent inhibitory activity against DHODH (IC = 173.
View Article and Find Full Text PDFEur J Med Chem
June 2021
Department of Pharmaceutical/Medicinal Chemistry an Tuebingen Center for Academic Drug Discovery (TüCAD(2)), Eberhard Karls Universität, Auf der Morgenstelle 8, 72076, Tübingen, DE, Germany; Cluster of Excellence 'Image Guided and Functionally Instructed Tumor Therapies' (iFIT), Eberhard Karls University of Tübingen, 72076, Tübingen, Germany; German Consortium for Translational Cancer Research (DKTK), Partner Site Tübingen, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany. Electronic address:
Currently, the therapeutic options for treatment of liver failure are very limited. As mitogen-activated protein kinase kinase 4 (MKK4) has recently been identified by in vivo RNAi experiments to be a major regulator in hepatocyte regeneration, we pursued the development of a small molecule targeting this protein kinase. Starting from the approved BRAF inhibitor vemurafenib (8), that showed a high off-target affinity to MKK4 in an initial screening, we followed a scaffold-hopping approach, changing the core heterocycle from 1H-pyrrolo[2,3-b]pyridine to 1H-pyrazolo[2,3-b]pyridine (10).
View Article and Find Full Text PDFJ Mater Chem B
August 2020
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'Ai Road, Suzhou 215123, China.
Four different neutral fluorescent markers containing nitrogen heterocycles (quinoxaline, 1H-pyrazolo[3,4-b]pyridine, 1H-indazole and 1H-pyrrolo[2,3-b]pyridine) as targeting groups were designed and prepared in order to screen out structural units for targeting mitochondria. Several classical fluorophores (coumarin, 1,8-naphthalimide and Nile Red) were connected with these heterocycles via Suzuki coupling reactions. The derivatives of coumarin (dyes 1a and 2a-c) and 1,8-naphthalimide (dyes 3a-c) fluoresced in the blue-green region, while the Nile Red derivatives (dyes 1b and 4a-c) fluoresced in the red light region.
View Article and Find Full Text PDFBioorg Med Chem Lett
February 2017
Medivation, Now Pfizer Inc., 525 Market Street, 36th Floor, San Francisco, CA 94105, United States. Electronic address:
The ATR pathway is a critical mediator of the replication stress response in cells. In aberrantly proliferating cancer cells, this pathway can help maintain sufficient genomic integrity for cancer cell progression. Herein we describe the discovery of 19, a pyrazolopyrimidine-containing inhibitor of ATR via a strategic repurposing of compounds targeting PI3K.
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