2,6-Diamino-2,3,4,6-tetradeoxy-D-threo-hexose (‘D-epi-purpurosamine’)

Abstract
Syntheses of derivatives of the title compounds are described; consideration of their physical constants has shown that purpurosamine C (a component of gentamicin C1a) is the D-erythro-isomer and has also assisted in the establishment of the structure of the related antibiotic, sisomicin.

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