18879-86-2Relevant articles and documents
Synthesis and Antimicrobial Activity of Methyl 2-(2-(2-Arylquinazolin-4-yl)sulfanyl)acetylamino Alkanoates
Megahed,Fathalla
, p. 2809 - 2816 (2018)
A series of methyl 2-(2-(2-arylquinazolin-4-yl)sulfanyl)acetylamino alkanoates have been developed on the basis of the S-chemoselective reaction of 2-arylquinazolin-4(3H)-thione with ethyl chloroacetate and N,N′-dicyclohexylcarbodiimide coupling method with amino acid ester hydrochloride. The precursor 2-arylquinazolin-4(3H)-thione was prepared by a new thiation method from 2-arylquinazolin-4(3H)-one by a two-step reaction that includes chlorination and then the reaction with N-cyclohexyldithiocarbamate cyclohexyl ammonium salt. The antimicrobial activity of the synthesized compounds was tested in vitro via paper-disc agar-plate method against two bacterial strains Gram-positive bacteria Staphylococcus aureus and Gram-negative bacteria Escherichia coli and a pathogenic yeast Candida albicans. Most synthesized compounds showed remarkable antibacterial activity against E.?coli overpassing the standard reference antibiotics applied: tetracycline, erythromycin, and novobiocin. On the other hand, most synthesized compounds gave moderate antifungal activity against pathogenic yeast C.?albicans.
Cu-mediated one-pot three-component synthesis of 3-N-substituted 1,4,2-benzodithiazine 1,1-dioxide derivatives
Dong, Wei,Ge, Zemei,Wang, Xin,Li, Ridong,Li, Runtao
, (2020/07/03)
A novel and efficient copper-catalyzed one-pot procedure for the synthesis of 3-N-substituted 1,4,2-benzodithiazine 1,1-dioxide derivatives from 2-halobenzenesulfonamides, amines and CS2 is described. The reaction proceeds through Ullmann-type S-arylation, intramolecular addition of NH2 with C[dbnd]S and dehydrosulfide, which provides a new and useful strategy for construction of cyclic aromatic sulfonamides.
Utilization of carbon disulfide as a powerful building block for the synthesis of 2-aminobenzoxazoles
Guntreddi, Tirumaleswararao,Allam, Bharat Kumar,Singh, Krishna Nand
, p. 9875 - 9880 (2013/09/02)
This protocol describes a novel, mild and convenient route to afford 2-aminobenzoxazoles in high yields, and represents a significant advance towards an environmentally friendly strategy. Aliphatic amines are made to react with carbon disulfide to provide intermediate dithiocarbamates (DTC), which in the presence of 2-aminophenol, subsequently undergo successive intermolecular nucleophilic attack and desulfurization to produce 2-aminobenzoxazoles within 3 h.