The synthesis, structural elucidation and antimicrobial activity of 2- and 4-substituted-coumarinyl chalcones
作者:Thrineshen Moodley、Mehbub Momin、Chunderika Mocktar、Christina Kannigadu、Neil A. Koorbanally
DOI:10.1002/mrc.4414
日期:2016.7
free synthesis have been carried out with decreased reactions times and optimized yields. Although the preferred method has been to use bases such as sodium hydroxide and piperidine, a greener approach involving cellulose sulphonic acid as a catalyst was also employed. Hybrid coumarinyl chalcones have recently shown anticancer, antioxidant, analgesic, antiinflammatory and antibacterial activity and
A facile and diverse synthesis of coumarin substituted spirooxindole and dispiro oxindole-pyrrolizidine/pyrrolothiazole/pyrrolidine derivatives via 1, 3-dipolar cycloaddition
A diverse series of coumarin substituted spirooxindole and dispirooxindole-pyrrolizidine/pyrrolothiazole/pyrrolidinederivatives have been obtained via azomethineylide specific three-component 1,3-dipolarcycloadditionreaction. This protocol features include operational simplicity, mild reaction conditions, high yields and a broad substrate scope.
A series of 3-[3-(substitutedphenyl)-1-phenyl-1H-pyrazol-5-yl]-2H-chromen-2-one (4a-k) were synthesized by reaction of 3-[2,3-dibromo-3-(substitutedphenyl)propanoyl]-2H-chromen-2-one (3 a-k) with phenyl hydrazine in presence of triethylamine in absolute ethanol, characterized by spectral data and screened for their in vitro antibacterial activity against gram-positive and gram-negative bacteria.
Synthesis and Antibacterial Activity of a New Series of 3&hyphen;&lsqb;3&hyphen;&lpar;Substituted Phenyl&rpar;&hyphen;1&hyphen;Isonicotinoyl&hyphen;1<i>H</i>&hyphen;Pyrazol&hyphen;5&hyphen;yl&rsqb;&hyphen;2<i>H</i>&hyphen;Chromen&hyphen;2&hyphen;one Derivatives
A novel series of 3‐[3‐(substituted phenyl)‐1‐isonicotinoyl‐1H‐pyrazol‐5‐yl]‐2H‐chromen‐2‐one derivatives 4a–k have been synthesized by the reaction of 3‐[2,3‐dibromo‐3‐(substituted phenyl) propanoyl]‐2H‐chromen‐2‐one 3a–k and isonicotinic acid hydrazide in the presence of triethylamine in absolute ethanol, characterized by spectral data and screened for their in‐vitro antibacterialactivity against
A series of novel coumarin derivativescontaining 4,5-dihydropyrazole moiety as potential telomerase inhibitors were synthesized. The bioassay tests show that compound 3d exhibited potentially high activity against human gastric cancer cell SGC-7901 with IC50 value of 2.69 ± 0.60 μg/mL. All title compounds were assayed for telomerase inhibition by a modified TRAP assay, the results show that compounds