Faujasite catalyzed nitrodeiodination of iodopyrazoles
摘要:
Nitrodeiodination of iodopyrazoles using nitric acid/Faujasite has been investigated. The present procedure is simple, rapid and convenient and requires no sulfuric acid or oleum and may be applied for the synthesis of several nitropyrazoles in good yields in drug and pharmaceutical industries. (C) 2013 Elsevier B.V. All rights reserved.
[EN] COMPOUNDS AND METHODS FOR KINASE MODULATION, AND INDICATIONS THEREFOR [FR] COMPOSÉS ET PROCÉDÉS DE MODULATION DES KINASES, ET INDICATIONS ASSOCIÉES
The present invention provides a heterocyclic compound having an IRAK-4 inhibitory action, which is useful for the prophylaxis or treatment of inflammatory disease, autoimmune disease, osteoarticular degenerative disease, neoplastic disease and the like, and a medicament containing thereof. The present invention relates to a compound represented by the formula (I):
wherein each symbol is as defined in the specification, or a salt thereof.
The present invention provides a heterocyclic compound having an IRAK-4 inhibitory action, which is useful for the prophylaxis or treatment of inflammatory disease, autoimmune disease, osteoarticular degenerative disease, neoplastic disease and the like, and a medicament containing thereof. The present invention relates to a compound represented by the formula (I):
wherein each symbol is as defined in the specification, or a salt thereof.
Discovery of a class of highly potent Janus Kinase 1/2 (JAK1/2) inhibitors demonstrating effective cell-based blockade of IL-13 signaling
作者:Mark Zak、Emily J. Hanan、Patrick Lupardus、David G. Brown、Colin Robinson、Michael Siu、Joseph P. Lyssikatos、F. Anthony Romero、Guiling Zhao、Terry Kellar、Rohan Mendonca、Nicholas C. Ray、Simon C. Goodacre、Peter H. Crackett、Neville McLean、Christopher A. Hurley、Po-wai Yuen、Yun-Xing Cheng、Xiongcai Liu、Marya Liimatta、Pawan Bir Kohli、Jim Nonomiya、Gary Salmon、Gerry Buckley、Julia Lloyd、Paul Gibbons、Nico Ghilardi、Jane R. Kenny、Adam Johnson
DOI:10.1016/j.bmcl.2019.04.008
日期:2019.6
Disruption of interleukin-13 (IL-13) signaling with large molecule antibody therapies has shown promise in diseases of allergic inflammation. Given that IL-13 recruits several members of the Janus Kinase family (JAK1, JAK2, and TYK2) to its receptor complex, JAK inhibition may offer an alternate small molecule approach to disrupting IL-13 signaling. Herein we demonstrate that JAK1 is likely the isoform most important to IL-13 signaling. Structure-based design was then used to improve the JAK1 potency of a series of previously reported JAK2 inhibitors. The ability to impede IL-13 signaling was thereby significantly improved, with the best compounds exhibiting single digit nM IC50's in cell-based assays dependent upon IL-13 signaling. Appropriate substitution was further found to influence inhibition of a key off-target, LRRK2. Finally, the most potent compounds were found to be metabolically labile, which makes them ideal scaffolds for further development as topical agents for IL-13 mediated diseases of the lungs and skin (for example asthma and atopic dermatitis, respectively).
Silica–Sulfuric Acid Catalyzed Nitrodeiodination of Iodopyrazoles
作者:P. Ravi、Girish M. Gore、Arun K. Sikder、Surya P. Tewari
DOI:10.1080/00397911.2011.584261
日期:2012.12.1
We report here the synthesis of nitropyrazoles in good to excellent yields from iodopyrazoles over silica-sulfuric acid catalyst for the first time. The present procedure require less acid, offers a simplified workup procedure, and may be applied for the nitration of a wide variety of iodoazoles in drug and pharmaceutical industries.