Abstract
A series of NH-acidic 2-anilino-3,5-dinitro-thiophenes (II), 2-anilino-3,4-dinitro-5-halo-thiophenes (VI), and some 3,5-dinitro-thienole-derivatives (IX, X) were synthesized. Compounds II and VI are potent uncouplers of oxidative phosphorylation in rat liver mitochondria. The most active comcounds yielded a 50% uncoupling at a concentration of 10-7 ᴍ. With some of the 2-anilino-3,5-dinitro-5-halo-thiophenes (BDCT or DDCT), added to respiring liver mitochondria, a transitory uncoupling of energy-linked reactions could be observed which is comparable to the phosphorylating cycles produced by ADP. The mechanism of this effect is discussed
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