194804-92-7Relevant articles and documents
INHIBITORS OF THE RENAL OUTER MEDULLARY POTASSIUM CHANNEL
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Page/Page column 54, (2014/09/03)
The present invention provides compounds of Formula(I) or a pharmaceutically acceptable salt 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, kidney disease, edema, and conditions associated with excessive salt and water retention.
Isothiazoloquinolones with enhanced antistaphylococcal activities against multidrug-resistant strains: Effects of structural modifications at the 6-, 7-, and 8-positions
Wang, Qiuping,Lucien, Edlaine,Hashimoto, Akihiro,Pais, Godwin C. G.,Nelson, David M.,Song, Yongsheng,Thanassi, Jane A.,Marlor, Christopher W.,Thoma, Christy L.,Cheng, Jijun,Podos, Steven D.,Ou, Yangsi,Deshpande, Milind,Pucci, Michael J.,Buechter, Douglas D.,Bradbury, Barton J.,Wiles, Jason A.
, p. 199 - 210 (2007/10/03)
We describe the biological evaluation of isothiazoloquinolones (ITQs) having structural modifications at the 6-, 7-, and 8-positions. Addition of a methoxy substituent to C-8 effected an increase in antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) and a decrease in cytotoxic activity against Hep2 cells. Removal of fluorine from C-6 or replacement of the C-8 carbon with a nitrogen compromised anti-MRSA activity. When the groups attached at C-7 were compared, the anti-MRSA activity decreased in the order 6-isoquinolinyl > 4-pyridinyl > 5-dihydroisoindolyl > 6-tetrahydroisoquinolinyl. The compound with the most desirable in vitro biological profile was 9-cyclopropyl-6-fluoro-8-methoxy-7-(2-methylpyridin-4-yl) -9H-isothiazolo[5,4-b]quinoline-3,4-dione (7g). This ITQ demonstrated (i) strong in vitro anti-MRSA activity (MIC90 = 0.5 μg/mL), (ii) strong inhibitory activities against S. aureus DNA gyrase and topoisomerase IV, with weak activity against human topoisomerase II, (iii) weak cytotoxic activities against three cell lines, and (iv) efficacy in an in vivo murine thigh model of infection employing MRSA.