A highly selective N-protection strategy for the preparation of 1-N-alkylated kanamycin antibiotics
作者:Michael B. Thomas、Michael T. Williams
DOI:10.1016/s0040-4039(00)71171-3
日期:1980.1
An O to N acyl migration technique has been used to selectively acetylate the amino groups of the aminosugar rings of kanamycins A and B, leaving the amino groups on the 2-deoxy-streptamine ring unprotected. A formylation-deformylation process then converts these N-acetylated kanamycins to their 3-N-formyl derivatives with high regioselectivity, giving key intermediates for the efficient preparation