1709-54-2Relevant articles and documents
A base labile handle for solid phase organic chemistry
Garcia-Echeverria, Carlos
, p. 8933 - 8934 (1997)
Several arylsulfonamides have been synthesised on solid phase using a new base labile handle. Cleavage front the solid support is accomplished by oxidation of the sulfide to the sulfone, followed by β-elimination in base media.
Synthesis, Computational Docking, and Antimycobacterial Study of Novel N'-phenyl-4-pyrrol-1-yl-benzenesulfonamide Derivatives
Alqahtani, Yahya S.,Joshi, Shrinivas D.,Kumar, S. R. Prem,Pavitra, H.
, p. 405 - 416 (2021/11/22)
Fresh sequences of pyrrole linked N'-phenyl-4-pyrrolyl-benzenesulfonamide derivatives were synthesized by different synthetic methods. Synthesis of the N'-phenyl-4-(1H-pyrrol-1-yl) benzenesulfonamides 5(a-e)/4-(2,5-dimethyl-1H-pyrrol-1-yl)-N'-phenylbenzenesulfonamides 6(a-e) was achieved by refluxing 2,5-dimethoxytetrahydrofuran/hexane 2,5-dione separately in presence of acetic acid. Further, synthesis of N-(4-(N'-phenylsulfamoyl)phenyl)-4-(1H-pyrrol-1-yl)benzamides 8(a-b)/4-(2,5-dimethyl-1H-pyrrol-1-yl)-N-(4-(N'-phenylsulfamoyl)phenyl)benzamides 10(a-b) was achieved by cold stirring of 4-(1H-pyrrol-1-yl)benzoic acid (7)/2,5-dimethyl-1H-pyrrol-1-yl)benzoic acid (9) correspondingly in the presence of 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate, N', N'-diisopropylethylamine, and Dimethylformamide. In vitro anti-tubercular study of afresh compounds has shown good minimum inhibitory concentration values (0.4-12.5 μg/mL) counter to Mycobacterium tuberculosis H37Rv, while the corresponding study of reported molecules for antibacterial activity disclosed considerable inhibition values (0.4-25 μg/mL) counter to Escherichia coli (Gram-ve) than Staphylococcus aureus (Gram +ve).
Effect of photodynamic antibacterial chemotherapy combined with antibiotics on Gram-positive and gram-negative bacteria
Ilizirov, Yana,Formanovsky, Andrei,Mikhura, Irina,Paitan, Yossi,Nakonechny, Faina,Nisnevitch, Marina
, (2018/12/11)
The well-known and rapidly growing phenomenon of bacterial resistance to antibiotics is caused by uncontrolled, excessive and inappropriate use of antibiotics. One of alternatives to antibiotics is Photodynamic Antibacterial Chemotherapy (PACT). In the present study, the effect of PACT using a photosensitizer Rose Bengal alone and in combination with antibiotics including methicillin and derivatives of sulfanilamide synthesized by us was tested against antibiotic-sensitive and antibiotic-resistant clinical isolates of Gram-positive S. aureus and Gram-negative P. aeruginosa. Antibiotic-sensitive and resistant strains of P. aeruginosa were eradicated by Rose Bengal under illumination and by sulfanilamide but were not inhibited by new sulfanilamide derivatives. No increase in sensitivity of P. aeruginosa cells to sulfanilamide was observed upon a combination of Rose Bengal and sulfanilamide under illumination. All tested S. aureus strains (MSSA and MRSA) were effectively inhibited by PACT. When treated with sub-MIC concentrations of Rose Bengal under illumination, the minimum inhibitory concentrations (MIC) of methicillin decreased significantly for MSSA and MRSA strains. In some cases, antibiotic sensitivity of resistant strains can be restored by combining antibiotics with PACT.