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.
Invented are non-peptide TPO mimetics. Also invented are novel processes and intermediates used in the preparation of the presently invented compounds. Also invented is a method of treating thrombocytopenia, in a mammal, including a human, in need thereof which comprises administering to such mammal an effective amount of a selected hydroxy-
1
-azobenzene derivative.
SO<sub>2</sub>F<sub>2</sub> mediated transformation of pyrazolones into pyrazolyl fluorosulfates
作者:Jing Leng、Hua-Li Qin
DOI:10.1039/c9ob00903e
日期:——
The construction of a class of novel N-heterocyclic molecules containing both pyrazole and fluorosulfate functionalities was achieved through the reactions of pyrazolones with SO2F2 in good to excellent yields. The fluorosulfate moieties were utilized as versatile building blocks in the Suzuki coupling reaction and SuFEx click chemistry.
通过吡唑啉酮与SO 2 F 2的反应,以良好至极好的收率,可以实现一类同时具有吡唑和氟硫酸盐官能团的新型N-杂环分子的构建。在Suzuki偶联反应和SuFEx click化学中,氟代硫酸盐部分被用作通用的结构单元。
THROMBOPOIETIN MIMETICS
申请人:Duffy Kevin J.
公开号:US20130078213A1
公开(公告)日:2013-03-28
Invented are non-peptide TPO mimetics. Also invented are novel processes and intermediates used in the preparation of the presently invented compounds. Also invented is a method of treating thrombocytopenia, in a mammal, including a human, in need thereof which comprises administering to such mammal an effective amount of a selected hydroxy-1-azobenzene derivative.
[EN] THROMBOPOIETIN MIMETICS<br/>[FR] MIMIQUES DE THROMBOPOIETINE
申请人:SMITHKLINE BEECHAM CORP
公开号:WO2001089457A2
公开(公告)日:2001-11-29
Invented are non-peptide TPO mimetics. Also invented are novel processes and intermediates used in the preparation of the presently invented compounds. Also invented is a method of treating thrombocytopenia, in a mammal, including a human, in need thereof which comprises administering to such mammal an effective amount of a selected hydroxy-1-azobenzene derivative.