- Reactions of 3-R-5-nitropyridines with nucleophiles: Nucleophilic substitution vs conjugate addition
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A number of 3-R-5-nitropyridines were synthesized and their reactions with various types of nucleophiles were investigated. The reaction outcome depends on the nature of a nucleophile: in case of anionic O-, N- and S-nucleophiles the previously unreported substitution of non-activated nitro group occurred while carbon nucleophiles underwent dearomatization of the pyridine ring with the formation of products of 1,2- and 1,4-addition.
- Bastrakov, Maxim A.,Nikol'skiy, Vladislav V.,Starosotnikov, Alexey M.,Fedyanin, Ivan V.,Shevelev, Svyatoslav A.,Knyazev, Daniil A.
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- ACLY INHIBITORS AND USES THEREOF
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The present invention provides compounds useful as inhibitors of ATP citrate lyase (ACLY), compositions thereof, and methods of using the same.
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- Utilizing Carbonyl Coordination of Native Amides for Palladium-Catalyzed C(sp3)?H Olefination
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PdII-catalyzed C(sp3)?H olefination of weakly coordinating native amides is reported. Three major drawbacks of previous C(sp3)?H olefination protocols, 1) in situ cyclization of products, 2) incompatibility with α-H-containing substrates, and 3) installation of exogenous directing groups, are addressed by harnessing the carbonyl coordination ability of amides to direct C(sp3)?H activation. The method enables direct C(sp3)?H functionalization of a wide range of native amide substrates, including secondary, tertiary, and cyclic amides, for the first time. The utility of this process is demonstrated by diverse transformations of the olefination products.
- Park, Hojoon,Li, Yang,Yu, Jin-Quan
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supporting information
p. 11424 - 11428
(2019/07/17)
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- Exploration of pyrrole derivatives to find an effective potassium-competitive acid blocker with moderately long-lasting suppression of gastric acid secretion
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With the aim to discover a novel excellent potassium-competitive acid blocker (P-CAB) that could perfectly overcome the limitations of proton pump inhibitors (PPIs), we tested various approaches based on pyrrole derivative 1 as a lead compound. As part of a comprehensive approach to identify a new effective drug, we tried to optimize the duration of action of the pyrrole derivative. Among the compounds synthesized, fluoropyrrole derivative 20j, which has a 2-F-3-Py group at position 5, fluorine atom at position 4, and a 4-Me-2-Py sulfonyl group at the first position of the pyrrole ring, showed potent gastric acid-suppressive action and moderate duration of action in animal models. On the basis of structural properties including a slightly larger C?log?P value (1.95), larger log?D value (0.48) at pH 7.4, and fairly similar pKa value (8.73) compared to those of the previously optimized compound 2a, compound 20j was assumed to undergo rapid transfer to the stomach and have a moderate retention time there after single administration. Therefore, compound 20j was selected as a new promising P-CAB with moderately long duration of action.
- Nishida, Haruyuki,Fujimori, Ikuo,Arikawa, Yasuyoshi,Hirase, Keizo,Ono, Koji,Nakai, Kazuo,Inatomi, Nobuhiro,Hori, Yasunobu,Matsukawa, Jun,Fujioka, Yasushi,Imanishi, Akio,Fukui, Hideo,Itoh, Fumio
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p. 3447 - 3460
(2017/05/29)
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- PYRROLE COMPOUNDS
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The present invention relates to a compound represented by the formula: wherein A is pyridyl group having at least one substituent wherein R1, R2 and R3 are each a hydrogen atom, a halogen atom, a C1-6 alkyl group optionally substituted by halogen or a C1-6 alkoxy group optionally substituted by halogen, R4 and R6 are each a hydrogen atom, a halogen atom or a C1-6 alkyl group optionally substituted by halogen, R5 is a hydrogen atom, a halogen atom, a C1-6 alkyl group optionally substituted by halogen or a C1-6 alkoxy group optionally substituted by halogen, and R7 is a hydrogen atom or a C1-6 alkyl group optionally substituted by halogen or a salt thereof, or a pharmaceutical composition containing the same.
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Page/Page column 72; 73
(2010/04/06)
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