Ck. Ryu et al., Modulation of NAD(P)H : quinone oxidoreductase (NQO1) activity mediated by5-arylamino-2-methyl-4,7-dioxobenzothiazoles and their cytotoxic potential, ARCH PH RES, 23(6), 2000, pp. 554-558
Synthesized 5-arylamino-2-methyl-4,7-dioxobenzothiazoles 3a-3o were evaluat
ed for modulation of NAD(P)H: quinone oxidoreductase (NQO1) activity with t
he cytosolic fractions derived from cultured human lung cancer cells and th
eir cytotoxicity in cultured several human solid cancer cell lines. The 4,7
-dioxobenzothiazoles affected the reduction potential by NQO1 activity and
showed a potent cytotoxic activity against human cancer cell lines. The tes
ted compounds 3a, 3b, 3g, 3h, 3n and 3o were considered as more potent cyto
toxic agents, and comparable modulators of NQO1 activity.