Dactylocycline A

Dactylocycline A is a tetracycline derivative with activity against some tetracycline-resistant microorganisms. Dactylocycline A is produced by fermentation of Dactylosporangium sp. and was found to be the most abundant glycoside in the initial fermentation. Dactylocycline A is acid-sensitive and readily hydrolyzes to the common sugar-free core substance dactylocyclinone. Although the sugar-free core has cross-resistance with tetracycline, Dactylocycline A exhibits activity against some tetracycline-resistant microorganisms[1].