排序方式: 共有101条查询结果,搜索用时 15 毫秒
51.
Ronald Palin John K. Clark Louise Evans Helen Feilden Dan Fletcher Niall M. Hamilton Andrea K. Houghton Philip S. Jones Duncan McArthur Brian Montgomery Paul D. Ratcliffe Alasdair R.C. Smith Aaron Sutherland Mark A. Weston Grant Wishart 《Bioorganic & medicinal chemistry letters》2009,19(22):2482-6446
A knowledge based approach has been adopted to identify novel NOP receptor agonists with simplified hydrophobes. Substitution of the benzimidazol-2-one piperidine motif with a range of hydrophobic groups and pharmacophore guided bio-isosteric replacement of the benzimidazol-2-one moiety was explored. Compound 51 was found to be a high affinity, potent NOP receptor agonist with reduced affinity for the hERG channel. 相似文献
52.
Rapid emergence of multidrug resistant Staphylococcus aureus infections has created a critical health menace universally. Resistance to all the available chemotherapeutics has been on rise which led to WHO to stratify Staphylococcus aureus as high tier priorty II pathogen. Hence, discovery and development of new antibacterial agents with new mode of action is crucial to address the multidrug resistant Staphylococcus aureus infections. The egressing understanding of new antibacterials on their biological target provides opportunities for new therapeutic agents. This review underlines on various aspects of drug design, structure activity relationships (SARs) and mechanism of action of various new antibacterial agents and also covers the recent reports on new antibacterial agents with potent activity against multidrug resistant Staphylococcus aureus. This review provides attention on in vitro and in vivo pharmacological activities of new antibacterial agents in the point of view of drug discovery and development. 相似文献
53.
Alan D. Brown Sharan K. Bagal Paul Blackwell David C. Blakemore Bruce Brown Peter J. Bungay Martin Corless James Crawforth David Fengas David R. Fenwick Victoria Gray Mark Kemp Wolfgang Klute Laia Malet Sanz Duncan Miller Yoshihisa Murata C. Elizabeth Payne Sarah Skerratt Joseph S. Warmus 《Bioorganic & medicinal chemistry》2019,27(1):230-239
The voltage gated sodium channel NaV1.8 has been postulated to play a key role in the transmission of pain signals. Core hopping from our previously reported phenylimidazole leads has allowed the identification of a novel series of benzimidazole NaV1.8 blockers. Subsequent optimization allowed the identification of compound 9, PF-06305591, as a potent, highly selective blocker with an excellent preclinical in vitro ADME and safety profile. 相似文献
54.
《Bioorganic & medicinal chemistry letters》2014,24(18):4598-4602
The synthesis and pharmacological data of some new and potent hydrophilic 5-HT4 receptor antagonists are described. Propanediol derivative 25 was identified as a potent antagonist with low affinity for the hERG potassium channel and promising pharmacokinetics. 相似文献
55.
《Bioorganic & medicinal chemistry letters》2020,30(15):127249
This paper presents the synthesis and glucokinase activity of novel hydrazone derivatives. The 2-(4-cyclopropylsulfonylphenyl)-2-[(E)-pyrrolidin-1-ylimino]-acetamide derivatives 5a–5h presented the in vitro glucokinase activities and in vivo blood glucose-lowering effects in mice. Particularly, 5h showed an oral hypoglycemic effect in rats at 1 mg/kg. These hydrazone derivatives are a potential new class of glucokinase activators for the treatment of type 2 diabetes. 相似文献
56.
Jun Guo Tingzhong Wang Xian Li Heidi Shallow Tonghua Yang Wentao Li Jianmin Xu Michael D. Fridman Xiaolong Yang Shetuan Zhang 《The Journal of biological chemistry》2012,287(40):33132-33141
The human ether-a-go-go-related gene (hERG) encodes the rapidly activating delayed rectifier potassium channel (IKr) which plays an important role in cardiac repolarization. A reduction or increase in hERG current can cause long or short QT syndrome, respectively, leading to fatal cardiac arrhythmias. The channel density in the plasma membrane is a key determinant of the whole cell current amplitude. To gain insight into the molecular mechanisms for the regulation of hERG density at the plasma membrane, we used whole cell voltage clamp, Western blotting, and immunocytochemical methods to investigate the effects of an integral membrane protein, caveolin-3 (Cav3) on hERG expression levels. Our data demonstrate that Cav3, hERG, and ubiquitin-ligase Nedd4-2 interact with each other and form a complex. Expression of Cav3 thus enhances the hERG-Nedd4-2 interaction, leading to an increased ubiquitination and degradation of mature, plasma-membrane localized hERG channels. Disrupting Nedd4-2 interaction with hERG by mutations eliminates the effects of Cav3 on hERG channels. Knockdown of endogenous Cav3 or Nedd4-2 in cultured neonatal rat ventricular myocytes using siRNA led to an increase in native IKr. Our data demonstrate that hERG expression in the plasma membrane is regulated by Cav3 via Nedd4-2. These findings extend our understanding of the regulation of hERG channels and cardiac electrophysiology. 相似文献
57.
An NMR study of the N-terminal domain of wild-type hERG and a T65P trafficking deficient hERG mutant
The human Ether-à-go-go Related Gene (hERG) potassium channel plays an important role in the heart by controlling the rapid delayed rectifier current. The N-terminal 135 residues (NTD) contain a Per-Arnt-Sim (PAS) domain and an N-terminal amphipathic helix. NMR relaxation analysis and H/D exchange experiments on the NTD demonstrated that the amphipathic helix is rigid and solvent accessible. An NTD containing a T65P mutation, which causes a hERG channel trafficking deficiency, was purified from E.coli. The mutant protein did not aggregate in gel filtration analysis and the amide cross peaks of its residues disappeared in an HSQC spectrum indicating the possibility of structural changes. A carbon chemical shift comparison of the residues with cross peaks in the HSQC spectrum showed no clear difference between the purified wild-type protein and the purified mutant. There were multiple conformations observed for the T65P mutant protein at high temperatures from HSQC experiments and a thermal stability assay showed that the T65P mutation reduced the thermal stability of NTD. This instability may affect protein folding or structural dynamics of other regions. 相似文献
58.
Labeeuw O Levoin N Poupardin-Olivier O Calmels T Ligneau X Berrebi-Bertrand I Robert P Lecomte JM Schwartz JC Capet M 《Bioorganic & medicinal chemistry letters》2011,21(18):5384-5388
Synthesis and biological evaluation of novel and potent cyclohexylamine-based histamine H3 receptor inverse agonists are described. Compounds in this newly identified series exhibited subnanomolar binding affinities for human receptor and no significant interaction with hERG channel. One derivative (10t) demonstrated enhanced in vivo efficiency and preferential brain distribution, both properties suitable for potential clinical evaluation. 相似文献
59.
The syntheses and biological profiles of sulfoximine-based Vioxx® analogs 2 are described. Interesting data have been obtained for 2a, which shows a selective COX-2 inhibition (albeit not as strong as Vioxx® itself) exhibiting reduced hERG activity compare to the parent sulfone Vioxx® (1). 相似文献
60.
The human ether-a-go-go-related gene potassium channel (hERG, Kv11.1, KCNH2) has an essential role in cardiac action potential repolarization. Electrical dysfunction of the voltage-sensitive ion channel is associated with potentially lethal ventricular arrhythmias in humans. hERG K+ channels are also expressed in a variety of cancer cells where they control cell proliferation and apoptosis. In this review, we discuss molecular mechanisms of hERG-associated cell cycle regulation and cell death. In addition, the significance of hERG K+ channels as future drug target in anticancer therapy is highlighted. 相似文献