The synthesis and biological evaluation of 1-C-alkyl-l-arabinoiminofuranoses, a novel class of α-glucosidase inhibitors
摘要:
The asymmetric synthesis of 1-C-alkyl-L-arabinoiminofuranoses 1 was achieved by asymmetric allylic alkylation (AAA), ring closing metathesis (RCM), and Negishi cross coupling as key reactions. Some of the prepared compounds showed potent inhibitory activities towards intestinal maltase, with IC50 values comparable to those of commercial drugs such as acarbose, voglibose, and miglitol, which are used in the treatment of type 2 diabetes. Among them, the inhibitory activity (IC50 = 0.032 mu M) towards intestinal sucrase of 1c was quite strong compared to the above commercial drugs. (C) 2010 Elsevier Ltd. All rights reserved.
Palladium-Catalyzed DYKAT of Butadiene Monoepoxide: Enantioselective Total Synthesis of (+)-DMDP, (−)-Bulgecinine, and (+)-Broussonetine G
作者:Barry M. Trost、Daniel B. Horne、Michael J. Woltering
DOI:10.1002/chem.200600202
日期:2006.8.25
butadiene monoxide allows for the expedient synthesis of trans- and cis-2,5-dihydropyrroles. The versatility of these chiral synthons towards the synthesis of a wide variety of iminosugar natural products was demonstrated with the short and high yielding asymmetric syntheses of (+)-DMDP, and (-)-bulgecinine. In addition, the first totalsynthesis of (+)-broussonetineG, a potent glycosidase inhibitor, is described