Abstract
Conjugates of 3,4,6-tri-О-acetyl-N-acetylglucosamine and tetraacetyl glucopyranose with alkyl phosphates were synthesized. The dependence of their antibacterial and antituberculosis activities on the length of the alkyl substituent at the phosphate group was found. The conjugates with a decyl substituent exhibited in vitro the highest antituberculosis activity against Mycobacterium tuberculosis H37Rv (MIC 3 µg/mL) but the weakest effect towards Streptococcus aureus and Bacillus cereus (≤MIC 125 µg/mL). Vice versa, the conjugates with a cetyl substituent demonstrated the highest antibacterial activity in vitro towards S. aureus and B. cereus (MIC 16 µg/mL) but showed the lowest antituberculosis activity (MIC 12 µg/mL) among the compounds under study.
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