This review focuses on patents published between January 1996 and March 199
9 covering bacterial tRNA synthetase inhibitors as antibacterial agents. Ni
ne of the eleven patents issued during this period claim new formulations,
forms and uses as well as new derivatives of pseudomonic acid A (mupirocin,
SmitKline Beecham), a natural product inhibitor of isoleucyl-tRNA syntheta
se. One patent describes a new use for indolmycin, an inhibitor of tryptoph
anyl-tRNA synthetase, and another discloses a novel class of isoleucyl-tRNA
synthetase inhibitors.