Abstract A radical α−C−H alkylation of a collection N ‐picolinamide amino acid derivatives with ethers and cycloalkanes as chemical feedstock is described. This cross‐dehydrogenative coupling distinguished by its reliable scalability removable auxiliary group, enables the assembly variety tri‐ tetrasubstituted compounds. magnified image

In the mol-ecular structure of the title compound, C(11)H(15)N(3)O(5)S, the amide group is nearly perpendicular to the pyridine ring, making a dihedral angle of 86.30 (13)°. The terminal ethyl group is disordered over two sites of equal occupancy. Inter-molecular N-H⋯O hydrogen bonding is present in the crystal structure.

synthesis of 4-(n,n- dimethylamino)-3-aryl-3-butene-2-one, ethyl-5-aryl-4-oxo-4h-pyran-2-carboxylate, ethyl-5-aryl-4-pyridones-2-carboxylate and 5-aryl-3-cyano-5-methyl-2-pyridones (aryl=3-thienyl, 2-furyl) are described.

quinolone antibacterials are one of the most important classes of pharmacological agents known as potent inhibitors of bacterial dna gyrase and topoisomerase iv that efficiently inhibit dna replication and transcription by generating several double-stranded dna break. some quinolone derivatives demonstrated inhibitory potential against eukaryote topoismarase ii and substantial dose-dependent cy...