2540-09-2Relevant academic research and scientific papers
Novel 2-oxoquinoline-6-sulfonamides as thiazide-like diuretics
Zubkov,Tsapko,Gritsenko,Zagayko,Galuzinskaya
, p. 1969 - 1974 (2012)
A series of novel N-aryl-7-chloro-4-methyl-2-oxo-1,2-dihydroquinoline-6- sulfonamides were obtained. The structure-activity relationship (SAR) approach was used to study their diuretic effect on rats. Diuretic activity was exhibited by all the test compounds, with 7-chloro-4-methyl-2-oxo-1,2-dihydroquinoline-6- sulfonanilide being most active. A SAR analysis revealed that the substituted (especially ortho-substituted in the benzene ring) arylamides diminish diuresis compared to the most active compound. For the most and least active compounds, their effects on the electrolyte excretion (Na+, K+, and Cl-) and creatinine level were also studied.
Ru-NHC-Catalyzed Asymmetric Hydrogenation of 2-Quinolones to Chiral 3,4-Dihydro-2-Quinolones
Daniliuc, Constantin,Glorius, Frank,Hu, Tianjiao,Lückemeier, Lukas
, p. 23193 - 23196 (2021/09/25)
Direct enantioselective hydrogenation of unsaturated compounds to generate chiral three-dimensional motifs is one of the most straightforward and important approaches in synthetic chemistry. We realized the Ru(II)-NHC-catalyzed asymmetric hydrogenation of 2-quinolones under mild reaction conditions. Alkyl-, aryl- and halogen-substituted optically active dihydro-2-quinolones were obtained in high yields with moderate to excellent enantioselectivities. The reaction provides an efficient and atom-economic pathway to construct simple chiral 3,4-dihydro-2-quinolones. The desired products could be further reduced to tetrahydroquinolines and octahydroquinolones.
Synthesis of 2-Quinolinones via a Hypervalent Iodine(III)-Mediated Intramolecular Decarboxylative Heck-Type Reaction at Room Temperature
Fan, Huaqiang,Pan, Peng,Zhang, Yongqiang,Wang, Wei
, p. 7929 - 7932 (2019/01/04)
A hypervalent iodine(III)-mediated intramolecular decarboxylative Heck-type reaction of 2-vinyl-phenyl oxamic acids has been developed. The unique ring-strain-enabled radical decarboxylation mechanism is preliminarily revealed. This protocol features metal-free reaction conditions and operational simplicity, allowing the lactamization of 2-vinylanilines using a readily accessible carbonyl source and the synthesis of various 2-quinolinones with excellent chemoselectivity at room temperature.
Lactamization of sp2C?H Bonds with CO2: Transition-Metal-Free and Redox-Neutral
Zhang, Zhen,Liao, Li-Li,Yan, Si-Shun,Wang, Lei,He, Yun-Qi,Ye, Jian-Heng,Li, Jing,Zhi, Yong-Gang,Yu, Da-Gang
supporting information, p. 7068 - 7072 (2016/07/06)
The first direct use of carbon dioxide in the lactamization of alkenyl and heteroaryl C?H bonds to synthesize important 2-quinolinones and polyheterocycles in moderate to excellent yields is reported. Carbon dioxide, a nontoxic, inexpensive, and readily available greenhouse gas, acts as an ideal carbonyl source. Importantly, this transition-metal-free and redox-neutral process is eco-friendly and desirable for the pharmaceutical industry. Moreover, these reactions feature a broad substrate scope, good functional group tolerance, facile scalability, and easy product derivatization.
Phosphonoalkylquinolin-2-ones as novel antagonists of non-NMDA ionotropic excitatory amino acid receptors
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, (2008/06/13)
The present invention pertains to antagonists of excitatory amino acid receptors, their method of preparation as well as compositions pertaining to them, which have the general formula: STR1 wherein n is 0, 1, 2, or 3; R 1 and R 2 are selected from the group consisting of hydrogen, halogen, halomethyl, nitro, amino, alkoxy, hydroxyl, hydroxymethyl, C 1 to C 6 lower alkyl and C 7 to C 12 higher alkyl, aryl and aralkyl; and the pharmaceutically acceptable salts thereof.
