153239-91-9Relevant articles and documents
Pyridazine derivatives. Part 39: Reactivity of 5-iodopyridazin-3(2H)-ones in palladium-catalysed reactions
Coelho, Alberto,Sotelo, Eddy,Novoa, Héctor,Peeters, Oswald M.,Blaton, Norbert,Ravi?a, Enrique
, p. 12177 - 12189 (2004)
In the search for novel antiplatelet agents, convenient and efficient methods for the preparation of 2,5-disubstituted pyridazin-3(2H)-ones are reported that utilise palladium-catalysed cross-coupling reactions. A post-coupling base-promoted isomerisation
INHIBITORS OF THE RENAL OUTER MEDULLARY POTASSIUM CHANNEL
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Page/Page column 57; 67, (2016/05/19)
The present invention provides compounds of Formula I and the pharmaceutically acceptable salts thereof, which are inhibitors of the ROMK (Kir1.1) channel. The compounds may be used as diuretic and/or natriuretic agents and for the therapy and prophylaxis of medical conditions including cardiovascular diseases such as hypertension, heart failure and chronic kidney disease and conditions associated with excessive salt and water retention.
NITROGEN HETEROCYCLE DERIVATIVES, PREPARATION THEREOF AND APPLICATION THEREOF IN HUMAN THERAPEUTICS
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Paragraph 0239; 0240; 0241, (2013/03/26)
The present invention relates to compounds having general formula I characterised in that wherein in particular: R1 represents one or a plurality of groups such as: trifluoromethyl, halogen such as F, Cl, Br, methyl, nitro. R represents nitroge
SUBSTITUTED PYRIDAZINONE DERIVATIVES AS HISTAMINE-3 (H3) RECEPTOR LIGANDS
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Page/Page column 65-66, (2009/12/27)
The present invention provides compounds according to Formulas I, II, III, IV, V, VI, VII or VIII; their use as H3 antagonists/inverse agonists, processes for their preparation, and pharmaceutical compositions thereof
Synthesis of 5H-pyridazino[4,5-b]indoles and their benzofurane analogues utilizing an intramolecular Heck-type reaction
Dajka-Halász, Beáta,Monsieurs, Katrien,éliás, Olivér,Károlyházy, László,Tapolcsányi, Pál,Maes, Bert U.W.,Riedl, Zsuzsanna,Hajós, Gy?rgy,Dommisse, Roger A.,Lemière, Guy L.F.,Ko?mrlj, Janez,Mátyus, Péter
, p. 2283 - 2291 (2007/10/03)
The title ring systems were prepared from pyridazin-3(2H)-one precursors in novel, efficient pathways. 2-Methylbenzo[b]furo[2,3-d]pyridazin-1(2H)-one was synthesized via a regioselective nucleophilic substitution reaction of a 2-methyl-4,5-dihalopyridazin-3(2H)-one with phenol followed by an intramolecular Heck-type reaction. The same molecule and its 6-phenyl analogue were also prepared via reaction of 2-methyl-5-iodopyridazin-3(2H)-one or 2-methyl-5-chloro-6-phenylpyridazin-3(2H)-one, respectively, with 2-bromophenol or 2-iodophenol followed by Pd-catalyzed cyclodehydrohalogenation. Moreover, a new approach for the synthesis of 2-methyl-2,5-dihydro-1H-pyridazino[4,5-b] indol-1-ones was also elaborated utilizing a Heck-type ring closure reaction on 5-[(2-bromophenyl)amino]-2-methylpyridazin-3(2H)-ones which were obtained via Buchwald-Hartwig amination of 2-methyl-5-halopyridazin-3(2H)-ones with 2-bromoaniline.
The Diels-Alder Reaction of Pyridazinones as Dienophiles
Matyus, Peter,Fuji, Kaoru,Tanaka, Kiyoshi
, p. 1975 - 1978 (2007/10/02)
The Diels-Alder reaction of 5-iodo (1a) and 5-ethylsulfonyl-2-methyl-3(2H)-pyridazinone (1b) with 2,3-dimethyl-1,3-butanediene afforded phthalazinone (3) and dihydrophthalazinone (2) as isolable products, respectively.The cycloadditions are well interpreted by the theoretical considerations based on the calculated AM1 data.