Starting with curcumin different pyrane, N-phenyl-1,3-thiazolidin and thiocurcumin derivatives were synthesized. 4-Oxo-3-phenyl1,3-thiazolidin derivative was reacted with different organic reagents examply, benzaldehyde, triethylorthoformate and hydrazine hydrate to form new series of 5-benzylidine-4-oxo-3-phenyl-1,3-thiazolidin, 5-ethoxymethylene-4-oxo-3-phenyl-1,3-thiazolidin and [1,8] naphthyridine derivatives. Some of these derivatives were evaluated as anti- inflammatory agents. All compounds have been characterized by spectral analyses. Read more

3‐Oxime‐4‐phenyl‐1(H)(l,5)benzodiazepin‐2‐one 2 was prepared and treated with malononitrile, arylidenenitriles, and bidentates to give the corresponding spiro‐3,3′‐isoxazolo‐, thiadiazino‐, and triazino‐1,5‐benzodiazepines 3–7. 3‐Bromo‐3‐cyano‐4‐phenyl‐l(H)(l,5)benzodiazepin‐2‐one 9a and 3‐bromo‐3‐cyano‐4‐(4′‐bromophenyl)‐1(H)(l,5)benzodiazepin‐2‐one 9b were synthesized via the bromination of 3‐cyano‐4‐phenyl‐1(H)(l,5)benzodiazepin‐2‐one 8. Compounds 9a,b were reacted with bidentates or cyclopentanone to afford spiro piprazine, quinoxaline, thiazine, thiadiazine, imidazole, and cyclopentafuran derivatives 10–16. Treatment of compound 1 with p‐tolyldiazonium chloride ... Read more

3-cyano-1,11-dihydro-4,5-diphenyl-2-thioxopyrido[2,3-b](1,5)benzodiazepine 2 and 3-(2′-cyano-1′-phenyl-2′-ethanethiocarboxamide)-4-phenyl-1(H)(1,5)benzodiazepin2-one 3 were prepared via the reaction of 1,3-dihydro-4-phenyl-(1,5)benzodiazepin-2-one 1 with benzylidenecyanothioacetamide. Compound 2 was treated with halo compounds to give the corresponding S-alkylated compounds 4 a−c, which underwent as intramolecular ring closure to thieno[3,2.5,6]pyrido[2,3-b](1,5)benzodiazepines 5 a−c under PTC conditions. One-pot syntheis of compounds 5 a−c was achieved via the reaction of compound 2 with the appropriate ... Read more