93856-98-5Relevant articles and documents
8-N-substituted-2H-isothiazolo[5,4-b]quinolizine-3,4-diones and related compounds as antiinfective agents
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Page/Page column 18, (2008/06/13)
The invention provides compounds and salts of Formula I and Formula II: which possess antimicrobial activity. The invention also provides novel synthetic intermediates useful in making compounds of Formula I and Formula II. The variables A1, A8, R2, R3, R5, R6, R7, and R9 are defined herein. Certain compounds of Formula I and Formula II disclosed herein are potent and selective inhibitors of bacterial DNA synthesis and bacterial replication. The invention also provides antimicrobial compositions, including pharmaceutical compositions, containing one or more compounds of Formula I or Formula II and one or more carriers, excipients, or diluents. Such compositions may contain a compound of Formula I or Formula II as the only active agent or may contain a combination of compounds of Formula I and/or Formula II and one or more other active agents. The invention also provides methods for treating microbial and protozoal infections in animals.
Isothiazolopyridones: Synthesis, structure, and biological activity of a new class of antibacterial agents
Wiles, Jason A.,Hashimoto, Akihiro,Thanassi, Jane A.,Cheng, Jijun,Incarvito, Christopher D.,Deshpande, Milind,Pucci, Michael J.,Bradbury, Barton J.
, p. 39 - 42 (2007/10/03)
We report the syntheses of first-generation derivatives of isothiazolopyridones and their in vitro evaluation as antibacterial agents. These compounds, containing a novel heterocyclic nucleus composed of an isothiazolone fused to a quinolizin-4-one (at C-2 and C-3 of the quinolizin-4-one), were prepared using a sequence of seven synthetic transformations. The solid-state structure of 7-chloro-9-ethyl-1-thia-2,4a- diazacyclopenta[b]naphthalene-3,4-dione was determined by X-ray diffraction. The prepared derivatives of desfluoroisothiazolopyridones exhibited (a) antibacterial activity against Gram-negative and Gram-positive organisms, (b) inhibitory activities against DNA gyrase and topoisomerase IV, and (c) no inhibitory activity against human topoisomerase II.
Quinolizinone type compounds
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, (2008/06/13)
Antibacterial compounds having the formula STR1 and the pharmaceutically acceptable salts, esters and amides thereof, preferred examples of which include those compounds wherein A is =CR6 --; R1 is cycloalkyl of from three to eight carbon atoms or substituted phenyl; R2 is selected from the group consisting of STR2 R3 is halogen; R4 is hydrogen, loweralkyl, a pharmaceutically acceptable cation, or a prodrug ester group; R5 is hydrogen, loweralkyl, halo(loweralkyl), or --NR13 R14 ; and R6 is halogen, loweralkyl, halo(loweralkyl), hydroxy-substituted loweralkyl, loweralkoxy(loweralkyl), loweralkoxy, or amino(loweralkyl), as well as pharmaceutical compositions containing such compounds and the use of the same in the treatment of bacterial infections.