Synthesis of glycosylated β-amino acids as new class of antitubercular agents
摘要:
A series of glycosylated P-amino acids was prepared and evaluated against Mycohacterium tuberculosis, M. avium, M. fortuitum and M. smegmatis. The compounds were designed to mimic the enzyme D-alanine racemase and glycosyl transferase involved in the biosynthesis of essential cell wall peptidoglycan and arabinogalactan. Though most of the compounds exhibited little activity, however, one showed significant activity against all the strains in cell culture and activity was confirmed by BACTEC method. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
Synthesis and bioevaluation of glycosyl ureas as α-glucosidase inhibitors and their effect on mycobacterium
摘要:
Glycosyl amino esters (2-13) on reaction with different isocyanates resulted in quantitative conversion to glycosyl ureas (14-32). Few of the selected ureas (15-20, 22-28, 30 and 32) on cyclative amidation with DBU/TBAB/4 Angstrom MS gave respective dihydropyrimidinones in fair to good yields (33-47). The compounds were screened for alpha-glucosidase inhibitory activity and two (19 and 23) of them showed strong inhibition against rat intestinal (x-glucosidase. The compounds were also screened against Mycobacterium aurum, however, only one (19) of them exhibited marginal antitubercular activity. (C) 2000 Elsevier Science Ltd. All rights reserved. (C) 2003 Elsevier Science Ltd. All rights reserved.