Synthesis and antibacterial and antifungal evaluation of some chalcone based sulfones and bisulfones
摘要:
Two series of chalcone based sulfone and bisulfone derivatives were synthesized using chalcone, thiophenol and sodium metal at room temperature, followed by oxidation of chalcone sulfides with m-CPBA at 0 degrees C in a novel method. Both sulfones and bisulfones were evaluated for their antimicrobial activities against Aspergillus niger and Candida albicans (yeast), Bacillus subtilis and Staphylococcus aureus (Gram (+) bacteria) and Pseudomonas aeruginosa and Salmonella typhimurium (Gram (-) bacteria) strains. Among them, compounds 2c, 3c, 6c, 7c, 8c and 9c have shown high antifungal activity against C albicans compare to reference drugs viz. Amphotericin-B and Nystatin. Compound 1c has shown slightly better antibacterial activity against B. subtilis and compounds 5c, 6c and 7c have shown excellent antibacterial activity against S. typhimurium in compare to reference drugs Ampicillin and Kanamycin. (C) 2012 Elsevier Masson SAS. All rights reserved.
Synthesis and antibacterial and antifungal evaluation of some chalcone based sulfones and bisulfones
摘要:
Two series of chalcone based sulfone and bisulfone derivatives were synthesized using chalcone, thiophenol and sodium metal at room temperature, followed by oxidation of chalcone sulfides with m-CPBA at 0 degrees C in a novel method. Both sulfones and bisulfones were evaluated for their antimicrobial activities against Aspergillus niger and Candida albicans (yeast), Bacillus subtilis and Staphylococcus aureus (Gram (+) bacteria) and Pseudomonas aeruginosa and Salmonella typhimurium (Gram (-) bacteria) strains. Among them, compounds 2c, 3c, 6c, 7c, 8c and 9c have shown high antifungal activity against C albicans compare to reference drugs viz. Amphotericin-B and Nystatin. Compound 1c has shown slightly better antibacterial activity against B. subtilis and compounds 5c, 6c and 7c have shown excellent antibacterial activity against S. typhimurium in compare to reference drugs Ampicillin and Kanamycin. (C) 2012 Elsevier Masson SAS. All rights reserved.
Conjugate addition of indoles and thiols with electron-deficient olefins catalyzed by Bi(OTf)3
作者:M.Mujahid Alam、Ravi Varala、Srinivas R. Adapa
DOI:10.1016/s0040-4039(03)01089-x
日期:2003.6
Conjugateaddition of indoles and thiols with a variety of electron-deficient olefins mediated by a catalytic amount of Bi(OTf)3 at ambient temperature to afford the corresponding Michael adducts in good to excellent yields with high selectivity is reported.
Abstract Potassium fluoride supported on aluminaefficientlycatalyzes Michael addition of aromatic and aliphatic thiols to a variety of conjugated alkenes such as α,β‐unsaturated carbonyl compounds, carboxylic esters, amides, nitriles and chalcones. The Michael adducts are produced in good to excellent yields and relatively in short times. The catalyst can be recycled for subsequent reactions without
Ruhemann, Journal of the Chemical Society, 1905, vol. 87, p. 20
作者:Ruhemann
DOI:——
日期:——
Posner, Chemische Berichte, 1902, vol. 35, p. 814
作者:Posner
DOI:——
日期:——
Synthesis and antibacterial and antifungal evaluation of some chalcone based sulfones and bisulfones
作者:Naveen Kumar Konduru、Sunita Dey、Mohammad Sajid、Mohammad Owais、Naseem Ahmed
DOI:10.1016/j.ejmech.2012.09.004
日期:2013.1
Two series of chalcone based sulfone and bisulfone derivatives were synthesized using chalcone, thiophenol and sodium metal at room temperature, followed by oxidation of chalcone sulfides with m-CPBA at 0 degrees C in a novel method. Both sulfones and bisulfones were evaluated for their antimicrobial activities against Aspergillus niger and Candida albicans (yeast), Bacillus subtilis and Staphylococcus aureus (Gram (+) bacteria) and Pseudomonas aeruginosa and Salmonella typhimurium (Gram (-) bacteria) strains. Among them, compounds 2c, 3c, 6c, 7c, 8c and 9c have shown high antifungal activity against C albicans compare to reference drugs viz. Amphotericin-B and Nystatin. Compound 1c has shown slightly better antibacterial activity against B. subtilis and compounds 5c, 6c and 7c have shown excellent antibacterial activity against S. typhimurium in compare to reference drugs Ampicillin and Kanamycin. (C) 2012 Elsevier Masson SAS. All rights reserved.