Aminoglycoside antibiotics: Studies directed toward the selective modification of hydroxyl groups: Synthesis of 3′-epiparomamine and 3′-epineamine

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Abstract
Based on the knowledge that certain bacterial strains can produce enzymes that are capable of phosphorylating the 3′-hydroxyl group of a series of aminoglycoside antibiotics, the pseudodisaccharide 3′-epiparomamine was prepared through a series of high yieldingsteps, starting from paromamine. Application of selective halogenation and subsequent animation reactions allowed the efficient transformation of 3′-epiparomamine to 3′-epineamine. The two compounds were not substrates for the inactivating enzymes, however, they are also much weaker antibiotics compared to the parent compounds paromamine and neamine. Model synthetic studies in the 2-amino-2-deoxy-D-ghicose series are also reported.

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