Synthesis and biological evaluation of novel naphthoquinone derivatives as potential anticancer and antimicrobial agents.

Four novel series of 1,4-naphthoquinone derivatives namely 2,3-disubstiuted 4-[(benzothiazol-2-yl)hydrazono]-1,4-dihydronaphthalen-1-one 4a-c, N1-(2,3-disubstituted-4-oxo-1,4-dihydronaphthalen-1-ylidene)-N2-(benzotriazol-1-yl)acetic acid hydrazide 5a-c, 2,3-disubstituted 4-[(5-aryl-2,3-dihyrothiazol-2-ylidene)hydrazono]-1,4-dihydronaphthalen-1-one 7a-c, and 3-methyl-2-substituted carbamoyl or thiocarbamoyl-hydrazinocarbonylmethylthio-1,4-dihydronaphthalene-1,4-dione 9a-c were synthesized. Three of the new compounds were chosen by NCI to be evaluated as anticancer agents and they showed promising activity. All the prepared compounds were tested as antimicrobial agents.