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.
A Convenient Synthesis of Novel Glycosyl Azetidines Under Mitsunobu Reaction Conditions
作者:Archana Singh、Bhuwan B. Mishra、Raju R. Kale、Divya Kushwaha、Vinod K. Tiwari
DOI:10.1080/00397911.2011.587079
日期:2012.12.15
Abstract A facile, simple, and high-yielding protocol for synthesis of novel glycosyl azetidines was developed from glycosyl β-amino alcohols via intramolecular cyclization underMitsunobu reaction conditions. GRAPHICAL ABSTRACT
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.