Solid-Phase Chemoenzymatic Synthesis of C-Sialosides
摘要:
The chemoenzymatic regioselective acylation of Neu5Ac followed by SmI2-mediated C-glycosylation on a solid support is described for five C-glycosides. This method should facilitate the construction of combinatorial libraries of inhibitors of neuraminidase activity and hemagglutinin interaction as potential antiviral agents.
Synthesis of a Precursor of Bioactive Pentapeptide OGP-(10-14) and the Fragment of Enkephalin Catalyzed by MCM-22 Immobilized or Free Proteases in Organic Solvents
作者:Ping Liu、Yun-hua Ye、Gui-ling Tian、Kin-Sing Lee、Man-Sau Wong、Wai-hung Lo
DOI:10.1055/s-2002-25762
日期:——
Full enzymatic synthesis of a precursor of osteogenic growth peptide fragment (10-14), Z-Tyr-Gly-Phe-Gly-Gly--OEt, was accomplished using immobilized proteases on molecular sieve MCM-22 by adsorption as catalyst via 3+2 synthetic route for the first time. The reuse time of immobilized enzyme was dependent on concrete reaction system. Compared with free enzyme, the reaction rate catalyzed by immobilized