Pfizer Corporation

William A Million

Kenneth Richardson

Rhona M Plews

Derivatives of kanamycin A, which have an acyl protecting group on the C-3' and C-6' amino groups, and optionally have a benzyl protecting group on the C-3 amino group, are useful intermediates for the preparation of 1-N-(.omega.-amino-2-hydroxyalkyl) derivatives of kanamycin A. Derivatives of kanamycin B, which have an acyl protecting group on the C-2', C-3' and C-6' amino groups, and optionally have a benzyl protecting group on the C-3 amino group, are useful intermediates for the preparation of 1-N-(.omega.-amino-2-hydroxyalkyl) derivatives of kanamycin B. Certain of the partially protected kanamycin A and kanamycin B derivatives of this invention are useful for preparing 1-N-(.omega.-amino-2-hydroxyalkanoyl) derivatives of kanamycin A and B. 1-N-(.omega.-Amino-2-hydroxyalkyl) and 1-N-(.omega.-amino-2-hydroxyalkanoyl)derivatives of kanamycin A and B are known antibacterial agents.

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Ramsgate, United Kingdom

William A Million