A new strategy for the synthesis of the nephritogenoside trisaccharide unit using phenylsulfenyl donors
摘要:
An efficient and stereocontrolled synthesis of the nephritogenoside trisaccharide unit using the glycosyl sulfoxide method is reported. This new glycosylation procedure enables complex oligosaccharides to be prepared in a highly convenient and stereoselective manner.
A New Base-Labile Anchoring Group for Polymer-Supported Oligosaccharide Synthesis
作者:Yali Wang、Hong Zhang、Wolfgang Voelter
DOI:10.1246/cl.1995.273
日期:1995.4
A new base-labile 9-hydroxymethylfluorene-2-succinic acid-based anchoring group, coupled to amino-ethylated polyethylene glycol, opens a new approach for polymer-supported syntheses of oligosaccharides using phenyl 1-thioglycopyranoside sulfoxides as highly efficient glycosyl donors.
readily accessible phenylsulfinyl glycoside proved to be an excellent glycosyl donor, leading to high yields and good selectivity. The extremely mild conditions utilized in glycosylation reactions allow trityl and other sensitive protecting groups to be used for temporary protection. The fact that phenyl thioglycosides function as glycosyl acceptors during the coupling reaction and can easily be transformed