Imidazopyridazines as potent inhibitors of Plasmodium falciparum calcium-dependent protein kinase 1 (PfCDPK1): Preparation and evaluation of pyrazole linked analogues
摘要:
The structural diversity and SAR in a series of imidazopyridazine inhibitors of Plasmodium falciparum calcium dependent protein kinase 1 (PfCDPK1) has been explored and extended. The opportunity to further improve key ADME parameters by means of lowering log D was identified, and this was achieved by replacement of a six-membered (hetero)aromatic linker with a pyrazole. A short SAR study has delivered key examples with useful in vitro activity and ADME profiles, good selectivity against a human kinase panel and improved levels of lipophilic ligand efficiency. These new analogues thus provide a credible additional route to further development of the series. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.
Copper-Catalyzed C–N Bond Exchange of N-Heterocyclic Substituents around Pyridine and Pyrimidine Cores
作者:Sheng Tao、Enhui Ji、Lei Shi、Ning Liu、Liang Xu、Bin Dai
DOI:10.1055/s-0036-1590893
日期:2017.12
copper-catalyzed transfer N-heteroarylation strategy using a C–N bond exchange reaction is described. This reaction accommodates a wide range of pyridine and pyrimidinerings bearing halogen atoms, which have wide utility for subsequent transformations. This method provides a direct and operationally simple approach for modifying complex molecules by the exchange of N-heterocyclic substituents. A copper-catalyzed
S. Tao和E. Ji的贡献相等。 抽象的 描述了使用C–N键交换反应的铜催化转移N-杂芳基化策略。该反应可容纳范围广泛的带有卤素原子的吡啶和嘧啶环,它们对于随后的转化具有广泛的用途。该方法提供了直接且操作简单的方法,用于通过交换N杂环取代基来修饰复杂分子。 描述了使用C–N键交换反应的铜催化转移N-杂芳基化策略。该反应可容纳范围广泛的带有卤素原子的吡啶和嘧啶环,它们对于随后的转化具有广泛的用途。该方法提供了直接且操作简单的方法,用于通过交换N杂环取代基来修饰复杂分子。
UREA SUBSTITUTED SULPHONAMIDE DERIVATIVES
申请人:Koivunen Jarkko Tapani
公开号:US20120196884A1
公开(公告)日:2012-08-02
The present invention relates to sulphonamide derivatives, whith a urea moiety. The invention also relates to the use of the derivatives as inhibitors of collagen receptor integrins, especially α2β1 integrin inhibitors e.g. in connection with diseases and medical conditions that involve the action of cells and platelets expressing collagen receptors, their use as a medicament, e.g. for the treatment of thrombosis, inflammation, cancer and vascular diseases, pharmaceutical compositions containing them and a process for preparing them. The sulphonamide derivatives have the general formula (I) or (I′).