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Volumn 19, Issue 18, 2009, Pages 5302-5306

5-(2-Pyrimidinyl)-imidazo[1,2-a]pyridines are antibacterial agents targeting the ATPase domains of DNA gyrase and topoisomerase IV

Author keywords

Antibacterial; Gram positive; Gyrase; GyrB

Indexed keywords

5 (2 PYRIMIDINYL)IMIDAZO[1,2 A]PYRIDINE DERIVATIVE; ADENOSINE TRIPHOSPHATASE; ANTIINFECTIVE AGENT; DNA TOPOISOMERASE (ATP HYDROLYSING); DNA TOPOISOMERASE IV; GYRASE INHIBITOR; NOVOBIOCIN; PYRIDINE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 68949174105     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2009.07.141     Document Type: Article
Times cited : (73)

References (32)
  • 22
  • 24
    • 68949193346 scopus 로고    scopus 로고
    • Int. Pat. Appl. WO 2009027733, b Basarab, G, Hill, P, Zhou, F. Int. Pat. Appl. WO 2008152418, 2008
    • (a) Dumas, J.; Sherer, B. Int. Pat. Appl. WO 2009027733, 2009; (b) Basarab, G.; Hill, P.; Zhou, F. Int. Pat. Appl. WO 2008152418, 2008.
    • (2009)
    • Dumas, J.1    Sherer, B.2
  • 28
    • 68949185223 scopus 로고    scopus 로고
    • note
    • For example, the synthesis of compound 32 is described in Ref. 13.
  • 29
    • 68949191561 scopus 로고    scopus 로고
    • note
    • 2 and the reaction was heated to reflux for 3 h. The reaction was then cooled to 23 °C and evaporated in vacuo to give a brown residue that was partitioned between 1 M HCl and dichloromethane. The aqueous layer was collected and the organic layer was extracted 2 × 1 M HCl then the combined aqueous layers were washed 1 × dichloromethane. The combined aqueous layers were then neutralized with sodium bicarbonate and extracted 3 × dichloromethane. The combined organic extracts were dried over sodium sulfate, evaporated in vacuo, and purified by silica gel chromatography (2-10% isopropanol/dichloromethane) to give 0.540 g (66.3%) of 7-(pyridin-3-yl)-5-(pyrimidin-2-yl)imidazo[1,2-a]pyridine. (g) To a preformed solution of ethylurea (1.74 g, 19.7 mmol) and bromine (1.26 g, 7.90 mmol) in 20 mL dichloromethane was added 7-(pyridin-3-yl)-5-(pyrimidin-2-yl)imidazo[1,2-a]pyridine (0.540 g, 1.97 mmol) and the resulting red solution was stirred at rt for 1 h. It was then poured into ice-cold aqueous sodium hydrogen sulfite (200 mL × 0.050 g/ml) and the bright yellow reaction was neutralized with sodium bicarbonate and extracted 3 × 10% isopropanol/dichloromethane. The combined organic extracts were dried over sodium sulfate and evaporated then purified by silica gel chromatography (5-30-60% isopropanol/dichloromethane).
  • 30
    • 68949179032 scopus 로고    scopus 로고
    • Clinical and Laboratory Standards Institute Methods for Antimicrobial Susceptibility Testing of Anaerobic Bacteria; Approved Standard, 6th ed, NCCLS Document M11-A6; 24, No. 2
    • Clinical and Laboratory Standards Institute Methods for Antimicrobial Susceptibility Testing of Anaerobic Bacteria; Approved Standard, 6th ed.; NCCLS Document M11-A6; Vol. 24, No. 2.
  • 32
    • 68949177433 scopus 로고    scopus 로고
    • For parE: Compounds to be tested were solvated at 10-30 mM in DMSO then diluted into 10 mM Tris pH 7.5, 9 mM MgCl2, and 0.02, v/v) Tween 20 and serial diluted. The serially diluted compounds (10 μL) were then transferred into a clear 384-well plate. To each well, 10 μL of a solution consisting of 20 mM Tris, pH 7.5, 120 mM KCl, 1.5 mM MgCl2, 0.02, v/v) Tween 20, 0.018% polyethyleneimine, 0.03% butylperflorosulfonate, and 66 μg/mL Streptococcus pneumoniae ParE. The reaction was initiated by addition of 10 μL of a solution containing 3 mM ATP and 0.02% Tween 20 and allowed to proceed for 30 min. The ATPase activity was quenched and orthophosphate detected by addition of 30 μL of a solution consisting of equal of 4.2, w/v) ammonium molybdate in 4 M HCl and 0.135, w/v) malachite green in 20, w/v) glycerol. The plate was briefly shaken and the absorbance at 650 nm was determined using a Spectramax plate reader Molecular Devices
    • 2, 0.02% (v/v) Tween 20, 0.018% polyethyleneimine, 0.03% butylperflorosulfonate, and 66 μg/mL Streptococcus pneumoniae ParE. The reaction was initiated by addition of 10 μL of a solution containing 3 mM ATP and 0.02% Tween 20 and allowed to proceed for 30 min. The ATPase activity was quenched and orthophosphate detected by addition of 30 μL of a solution consisting of equal volumes of 4.2% (w/v) ammonium molybdate in 4 M HCl and 0.135% (w/v) malachite green in 20% (w/v) glycerol. The plate was briefly shaken and the absorbance at 650 nm was determined using a Spectramax plate reader (Molecular Devices).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.