- Diverse, Potent, and Efficacious Inhibitors That Target the EED Subunit of the Polycomb Repressive Complex 2 Methyltransferase
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Aberrant activity of the histone methyltransferase polycomb repressive complex 2 (PRC2) has been linked to several cancers, with small-molecule inhibitors of the catalytic subunit of the PRC2 enhancer of zeste homologue 2 (EZH2) being recently approved fo
- Bagal, Sharan K.,Barton, Peter,Bloecher, Andrew,Borodovsky, Alexandra,Code, Erin,Fillery, Shaun M.,Gregson, Clare,Hsu, Jessie Hao-Ru,Kawatkar, Sameer P.,Li, Chengzhi,Longmire, David,Nai, Youfeng,Nash, Samuel C.,O' Donovan, Daniel H.,Pike, Andrew,Pike, Kurt G.,Rawlins, Phillip B.,Read, Jon A.,Robinson, James,Shen, Minhui,Tang, Jia,Wang, Peng,Williamson, Beth,Woods, Haley
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p. 17146 - 17183
(2021/12/06)
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- Synthesis of 4-alkylsulfanylphthalazin-1(2H)-ones via palladium catalyzed sulfanylation of substituted 4-bromophthalazin-1(2H)-ones
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The synthesis of a series of new alkylsulfanyl phthalazinone and phthalazine derivatives is described. The target compounds were efficiently synthesized in a four step sequence, consisting of (1) cyclization of 2-formylbenzoic acid with hydrazine hydrate to form phthalazinone, (2) the direct bromination of phthalazinone core with KBr3, (3) alkylation of the obtained 4-bromolactam (Mitsunobu procedure) to make N- and also O-alkyl derivatives and finally (4) palladium-catalyzed coupling reactions of 2-alkyl-4-bromophthalazinone and 1-alkyloxy-4-bromophthalazine derivatives with aliphatic mercaptanes. Furthermore, the synthesis of 2-methyl-8-(propan-2-yl)sulfanyl-pyrido[3,4-d]pyridazin-1(2H)-one from 2-methyl-pyrido[3,4-d]pyridazin-1(2H)-one via bromination reaction with KBr3and subsequent sulfanylation by isopropyl mercaptan under catalyzed coupling reaction conditions is also described.
- Malinowski, Zbigniew,Fornal, Emilia,Sierocińska, Beata,Czeczko, Renata,Nowak, Monika
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p. 7942 - 7951
(2016/11/19)
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- Cell Penetrant Inhibitors of the KDM4 and KDM5 Families of Histone Lysine Demethylases. 2. Pyrido[3,4-d]pyrimidin-4(3H)-one Derivatives
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Following the discovery of cell penetrant pyridine-4-carboxylate inhibitors of the KDM4 (JMJD2) and KDM5 (JARID1) families of histone lysine demethylases (e.g., 1), further optimization led to the identification of non-carboxylate inhibitors derived from pyrido[3,4-d]pyrimidin-4(3H)-one. A number of exemplars such as compound 41 possess interesting activity profiles in KDM4C and KDM5C biochemical and target-specific, cellular mechanistic assays.
- Westaway, Susan M.,Preston, Alex G. S.,Barker, Michael D.,Brown, Fiona,Brown, Jack A.,Campbell, Matthew,Chung, Chun-Wa,Drewes, Gerard,Eagle, Robert,Garton, Neil,Gordon, Laurie,Haslam, Carl,Hayhow, Thomas G.,Humphreys, Philip G.,Joberty, Gerard,Katso, Roy,Kruidenier, Laurens,Leveridge, Melanie,Pemberton, Michelle,Rioja, Inma,Seal, Gail A.,Shipley, Tracy,Singh, Onkar,Suckling, Colin J.,Taylor, Joanna,Thomas, Pamela,Wilson, David M.,Lee, Kevin,Prinjha, Rab K.
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p. 1370 - 1387
(2016/03/05)
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- Synthesis of Some Novel N-Substituted Phthalazinone and Pyridopyridazinone Derivatives
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Phthalazinone and pyridopyridazinone derivatives 3, 5, and 9 were prepared via reaction ofappropriate lactams 2 and 8 with 2-bromoethylphthalimide, N-tosylaziridine, and N,O-ditosyl derivatives of N-methylethanolamine in a two-step process in the presence
- Malinowski, Zbigniew,Sroczyński, Dariusz,Szczes?niak, Aleksandra K.
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p. 1743 - 1750
(2015/08/06)
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- Tetrahydropyrido[d]pyridazinones - Promising scaffolds for drug discovery
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An approach to the synthesis of all possible tetrahydropyrido[d] pyridazinones has been developed. The method relies on the catalytic hydrogenation of the corresponding aromatic counterparts, which were obtained by cyclization of the relevant dibromomethyl-substituted pyridinecarboxylates with hydrazine. The synthetic schemes include 4-5 steps starting from commercially available materials. The tetrahydropyrido[d]pyridazinone scaffolds are combinations of a saturated heterocycle (piperidine) and a privileged aromatic heterocycle (pyridazinone); hence they are promising starting points for the design in medicinal chemistry.
- Yaremenko, Anatoliy G.,Volochnyuk, Dmitriy M.,Shelyakin, Vyacheslav V.,Grygorenko, Oleksandr O.
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p. 6799 - 6803
(2013/07/26)
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- Synthesis and pharmacological evaluation of N- (dimethylamino)ethyl derivatives of benzo- and pyridopyridazinones
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New N-(dimethylamino)ethyl derivatives of phthalazinones and pyridopyridazinones 7, 9 were synthesized and assayed as potential analgesic agents in the hot-plate, tail-flick, and writhing tests. Pharmacological assay demonstrated that eight (in ten) of th
- Pakulska, Wanda,Malinowski, Zbigniew,Szczesniak, Aleksandra K.,Czarnecka, Elzbieta,Epsztajn, Jan
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scheme or table
p. 41 - 47
(2009/06/06)
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- A concise regioselective synthesis of hydroxyazaisoindolinones and their conversion into pyridopyridazinones
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The synthesis of pyridopyridazinones 7 and 8 via the reaction of hydroxyazaisoindolinones 5 and 6 with hydrazine hydrate is described. Compounds 7 and 8 were then subjected to reactions with alkyl halides to furnish N-alkyl derivatives. Only in the reaction of pyridopyridazinone 8 with benzyl bromide was the O-benzylpyridopyridazine 14b formed in addition to the N-benzylpyridopyridazinone 14a.
- Brzezinski, Jacek Z.,Bzowski, Henryk B.,Epsztajn, Jan
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p. 3261 - 3272
(2007/10/03)
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