Hydrazinonaphthalene and Azonaphthalene Thrombopoietin Mimics Are Nonpeptidyl Promoters of Megakaryocytopoiesis
摘要:
High-throughput screening for the induction of a luciferase reporter gene in a thrombopoietin (TPO)-responsive cell line resulted in the identification of 4-diazo-3-hydroxy-1-naphthalene-sulfonic acids as TPO mimics. Modification of the core structure and adjustment of unwanted functionality resulted in the development of (5-oxo-1,5-dihydropyrazol-4-ylidene)hydrazines which exhibited efficacies equivalent to those of TPO in several cell-based assays designed to measure thrombopoietic activity. Furthermore, these compounds elicited biochemical responses in TPO-receptor-expressing cells similar to those in TPO itself, including kinase activation and protein phosphorylation. Potencies for the best compounds were high for such low molecular weight compounds (MW < 500) with EC50 values in the region of 1-20 nM.
The present invention provides low molecular weight compounds useful as cytokine inhibitors, and compositions thereof. In particular, compounds of the invention are useful as anti-inflammatory agents. There are further provided methods for the preparation of such agents and their use in preventing or treating conditions mediated by cytokines such as arthritis.
The present invention provides low molecular weight compounds useful as cytokine inhibitors, and compositions thereof. In particular, compounds of the invention are useful as anti-inflammatory agents. There are further provided methods for the preparation of such agents and their use in preventing or treating conditions medicated by cytokines such as arthritis.
Difluoromethoxylated Ketones as Building Blocks for the Synthesis of Challenging OCF<sub>2</sub>H‐Bearing N‐Heterocycles
作者:Anaïs Loison、Gilles Hanquet、Fabien Toulgoat、Thierry Billard、Armen Panossian、Frédéric R. Leroux
DOI:10.1002/ejoc.202300695
日期:2023.11.7
A straightforward synthesis of nitrogen-containing heterocycles bearing the Emerging Fluorinated Group −OCF2H is herein disclosed. Various difluoromethoxylated pyrazoles, isoxazoles, pyrimidines and indoles were thus quickly and easily obtained. These new structures of high value were accessed from simple α-(difluoromethoxy)ketones as versatile building blocks in a one-pot process.
Pyrazoline derivatives, processes for their preparation and pharmaceutical formulations containing them
申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0056466A2
公开(公告)日:1982-07-28
Compounds of formula (I)
inhibit both the cyclo-oxygenase and lipoxygenase pathways of arachidonic acid oxygenation and are useful in medicine as, e.g., anti-inflammatory and anti-asthmatic agents.
The compounds may be administered as the raw chemical or in association with a carrier as a pharmaceutical formulation.
The compounds may be prepared by methods analogous to those known in the art, e.g., by the method of Duffin and Kendall in J. Chem. Soc. (1954), 408-415, or by other methods.
式(I)化合物
可抑制花生四烯酸氧合的环氧化酶和脂氧化酶途径,可作为消炎药和抗哮喘药等药物使用。
这些化合物可以作为化学原料给药,也可以与载体一起作为药物制剂给药。
这些化合物的制备方法可以类似于本领域已知的方法,例如 Duffin 和 Kendall 在 J. Chem.Soc.(1954),408-415)中的方法或其他方法制备。