Stoffwechselprodukte von Mikroorganismen 49. Mitteilung. Die Ferrioxamine A 1 , A 2 und D 2

The structures of the ferrioxamines A 1 , A 2 , and D 2 , minor components of the sideramine mixtures from cultures of Streptomyces , have been determined by degradation and, in part, by synthesis. Whereas the previously investigated ferrioxamines B, D 1 , E, and G contain but a single basic component, 1‐amino‐5‐hydroxylaminopentane, the ferrioxamines A 1 , A 2 , and D 2 contain in addition to this base its lower homologue, 1‐amino‐4‐hydroxylamino‐butane.