- Axitinib intermediate synthesis method
-
The invention relates to an axitinib intermediate synthesis method, and belongs to the field of chemical synthesis, wherein a target compound is obtained through a Vilsmeier reaction, pyranyl protection, a wittig reaction, a reduction reaction and an iodo reaction. According to the present invention, the palladium catalytic reaction is replaced with the wittig reaction, such that the use of the expensive palladium catalyst can be avoided, the post-treatment can be conveniently performed, and the production cost is saved.
- -
-
Paragraph 0012
(2019/07/04)
-
- Characterization of Protease-Activated Receptor (PAR) ligands: Parmodulins are reversible allosteric inhibitors of PAR1-driven calcium mobilization in endothelial cells
-
Several classes of ligands for Protease-Activated Receptors (PARs) have shown impressive anti-inflammatory and cytoprotective activities, including PAR2 antagonists and the PAR1-targeting parmodulins. In order to support medicinal chemistry studies with hundreds of compounds and to perform detailed mode-of-action studies, it became important to develop a reliable PAR assay that is operational with endothelial cells, which mediate the cytoprotective effects of interest. We report a detailed protocol for an intracellular calcium mobilization assay with adherent endothelial cells in multiwell plates that was used to study a number of known and new PAR1 and PAR2 ligands, including an alkynylated version of the PAR1 antagonist RWJ-58259 that is suitable for the preparation of tagged or conjugate compounds. Using the cell line EA.hy926, it was necessary to perform media exchanges with automated liquid handling equipment in order to obtain optimal and reproducible antagonist concentration-response curves. The assay is also suitable for study of PAR2 ligands; a peptide antagonist reported by Fairlie was synthesized and found to inhibit PAR2 in a manner consistent with reports using epithelial cells. The assay was used to confirm that vorapaxar acts as an irreversible antagonist of PAR1 in endothelium, and parmodulin 2 (ML161) and the related parmodulin RR-90 were found to inhibit PAR1 reversibly, in a manner consistent with negative allosteric modulation.
- Gandhi, Disha M.,Majewski, Mark W.,Rosas, Ricardo,Kentala, Kaitlin,Foster, Trevor J.,Greve, Eric,Dockendorff, Chris
-
p. 2514 - 2529
(2018/04/30)
-
- An optimized procedure for direct access to 1: H -indazole-3-carboxaldehyde derivatives by nitrosation of indoles
-
Indazole derivatives are currently drawing more and more attention in medicinal chemistry as kinase inhibitors. 1H-indazole-3-carboxaldehydes are key intermediates to access to a variety of polyfunctionalized 3-substituted indazoles. We report here a general access to this motif, based on the nitrosation of indoles in a slightly acidic environment. These very mild conditions allow the conversion of both electron-rich and electron-deficient indoles into 1H-indazole-3-carboxaldehydes.
- Chevalier, Arnaud,Ouahrouch, Abdelaaziz,Arnaud, Alexandre,Gallavardin, Thibault,Franck, Xavier
-
p. 13121 - 13128
(2018/04/23)
-
- BENZAZOLE DERIVATIVES, COMPOSITIONS, AND METHODS OF USE AS AURORA KINASE INHIBITORS
-
The present invention relates to compounds and methods from the treatment of cancer. The invention provides compounds that inhibit Aurora kinase, pharmaceutical compositions comprising compounds that inhibit Aurora kinase, and methods for the treatment of cancer using the compounds of the presentation invention or pharmaceutical compositions comprising compounds of the present invention.
- -
-
Page/Page column 60-61
(2010/11/28)
-
