91626-49-2Relevant academic research and scientific papers
THERAPEUTIC HYDROXYPYRIDINONES, HYDROXYPYRIMIDINONES AND HYDROXYPYRIDAZINONES
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Page/Page column 71, (2014/04/03)
The invention provides compounds of formula (I): and salts and prodrugs thereof wherein R4, X1 and X2 have any of the meanings defined in the specification, as well as pharmaceutical compositions comprising the compounds or salts and methods for their use in therapy. The compounds have useful antiviral properties.
Phenyl substituted 4-hydroxypyridazin-3(2 H)-ones and 5-hydroxypyrimidin-4(3 H)-ones: Inhibitors of influenza a endonuclease
Sagong, Hye Yeon,Bauman, Joseph D.,Patel, Disha,Das, Kalyan,Arnold, Eddy,Lavoie, Edmond J.
, p. 8086 - 8098 (2014/12/10)
Seasonal and pandemic influenza outbreaks remain a major human health problem. Inhibition of the endonuclease activity of influenza RNA-dependent RNA polymerase is attractive for the development of new agents for the treatment of influenza infection. Our earlier studies identified a series of 5- and 6-phenyl substituted 3-hydroxypyridin-2(1H)-ones that were effective inhibitors of influenza endonuclease. These agents identified as bimetal chelating ligands binding to the active site of the enzyme. In the present study, several aza analogues of these phenyl substituted 3-hydroxypyridin-2(1H)-one compounds were synthesized and evaluated for their ability to inhibit the endonuclease activity. In contrast to the 4-aza analogue of 6-(4-fluorophenyl)-3-hydroxypyridin-2(1H)-one, the 5-aza analogue (5-hydroxy-2-(4-fluorophenyl)pyrimidin-4(3H)-one) did exhibit significant activity as an endonuclease inhibitor. The 6-aza analogue of 5-(4-fluorophenyl)-3-hydroxypyridin-2(1H)-one (6-(4-fluorophenyl)-4-hydroxypyridazin-3(2H)-one) also retained modest activity as an inhibitor. Several varied 6-phenyl-4-hydroxypyridazin-3(2H)-ones and 2-phenyl-5-hydroxypyrimidin-4(3H)-ones were synthesized and evaluated as endonuclease inhibitors. The SAR observed for these aza analogues are consistent with those previously observed with various phenyl substituted 3-hydroxypyridin-2(1H)-ones.
SAR analysis of novel non-peptidic NPBWR1 (GPR7) antagonists
Guerrero, Miguel,Urbano, Mariangela,Schaeffer, Marie-Therese,Brown, Steven,Rosen, Hugh,Roberts, Edward
, p. 614 - 619 (2013/02/25)
In this Letter we report on the advances in our NPBWR1 antagonist program aimed at optimizing the 5-chloro-2-(3,5-dimethylphenyl)-4-(4-methoxyphenoxy) pyridazin-3(2H)-one lead molecule previously obtained from a high-throughput screening (HTS)-derived hit. Synthesis and structure-activity relationships (SAR) studies around the 3,5-dimethylphenyl and 4-methoxyphenyl regions resulted in the identification of a novel series of non-peptidic submicromolar NPBWR1 antagonists based on a 5-chloro-4-(4-alkoxyphenoxy)-2-(benzyl)pyridazin-3(2H)- one chemotype. Amongst them, 5-chloro-2-(9H-fluoren-9-yl)-4-(4-methoxyphenoxy) pyridazin-3(2H)-one 9h (CYM50769) inhibited NPW activation of NPBWR1 with a submicromolar IC50, and displayed high selectivity against a broad array of off-targets with pharmaceutical relevance. Our medicinal chemistry study provides innovative non-peptidic selective NPBWR1 antagonists that may enable to clarify the biological role and therapeutic utility of the target receptor in the regulation of feeding behavior, pain, stress, and neuroendocrine function.
Synthesis and evaluation of 4- and 5-pyridazin-3-one phenoxypropylamine analogues as histamine-3 receptor antagonists
Becknell, Nadine C.,Lyons, Jacquelyn A.,Aimone, Lisa D.,Huang, Zeqi,Gruner, John A.,Raddatz, Rita,Hudkins, Robert L.
experimental part, p. 3880 - 3886 (2012/08/27)
A novel series of 4-pyridazin-3-one and 5-pyridazin-3-one analogues were designed and synthesized as H3R antagonists. Structure-activity relationship revealed the 5-pyridazin-3-ones 8a and S-methyl 8b had excellent human and rat H3R affinities, and acceptable pharmacokinetic properties. In vivo evaluation of 8a showed potent activity in the rat dipsogenia model and robust wake-promoting activity in the rat EEG/EMG model.
CASPASE INHIBITORS BASED ON PYRIDAZINONE SCAFFOLD
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Page/Page column 38, (2008/06/13)
The present invention relates to a pyridazinone derivative which can be used as a caspase inhibitor, process for the preparation thereof, and pharmaceutical composition for inhibiting caspase comprising the same.
