Synthesis and in vitro evaluation of 8-hydroxyquinoline analogs as inhibitors of dental plaque

Abstract
A group of 5-substituted 8-hydroxyquinolines with predicted log P [partition coefficient] values in the 1-4 range were prepared from either 8-hydroxyquinoline or its appropriate derivative. 5-Formyl-, 5-iodo-, 5-fluoro-, 5-acetyl- and 5-methoxymethyl-8-hydroxyquinoline in addition to methyl 5-(8-hydroxyquinolyl)acetate and ethyl 5-(8-hydroxyquinolyl)acetate displayed greater in vitro antiplaque activity than 8-hydroxyquinoline. [Streptococcus mutans was used.].

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