Starting with 3,5-diphenylcyclohex-2-en-1-one, 3,5-diphenylcyclohex-2-en-1-semicarbazone, 1-chloro-3,5-diphenylcyclohex-2-en-2-carbaldehyde, and 3,5-diphenylcyclohex-2-en-1-hydrazone were synthesized via the reactions with semicarbazide hydrochloride, POCl3/ dimethylformamide, and hydrazine hydrate, respectively. These products were used as key intermediates for the preparation of novel series of tetrahydrobenzothiadiazol-1-oxide, indazole, benzo-thiazepines, pentahydroxyhexylidene and N-thiazines. Some of these derivatives exhibit high antibacterial activity against Gram-positive bacteria. Read more

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

The moiety of cyclohexene has been showed highly antibacterial activity. New compounds were synthesized from diphenylcyclohexenone via reaction with a variety of reagents to afford branched chain of 1,3-diphenylcyclohexene or fused heterocyclic systems including pyrazole, chromen and pyrrole derivatives. Cyclic ketoketene _s,s_-acetal can be prepared by reaction with CS2/MeI under PTC conditions which in turn used as starting material for ... Read more