Abstract
Previously unknown conjugates of the diterpenoid isosteviol 1 and 1-O-methyl-2,3-di-O-acetyl-β-Darabinofuranoside in which the terpenoid and carbohydrate molecules were linked through polymethylene spacers of various lengths were synthesized. Isosteviol 1 and its conjugate 10 exhibited high bacteriostatic activity selectively against Staphylococcus aureus ATCC 209p. Conjugates 9–11 inhibited growth of Mycobacterium tuberculosis H37Rv at the level of the antituberculosis drug pyrazinamide. Removal of the acetyl protection from conjugate 9 increased the antituberculosis activity by eight times.
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