Straightforward Entry to S-Glycosylated Fmoc-Amino Acids and Their Application to Solid Phase Synthesis of Glycopeptides and Glycopeptidomimetics
摘要:
Streamlined access to S-glycosylated Fmoc-amino acids was developed. The process provides diverse glycosylated modified amino acids in high yield and stereoselectivity taking advantage of the in situ generation of a glycosylthiolate obtained from carbohydrate acetates in a few steps. Mild basic conditions make the conjugation reaction compatible with Fmoc-iodo-amino acids. To validate the strategy the glycosylated building blocks were used for SPPS and the unprecedented incorporation of a long thio-oligosaccharide to the peptide chain was demonstrated.
Straightforward Entry to S-Glycosylated Fmoc-Amino Acids and Their Application to Solid Phase Synthesis of Glycopeptides and Glycopeptidomimetics
摘要:
Streamlined access to S-glycosylated Fmoc-amino acids was developed. The process provides diverse glycosylated modified amino acids in high yield and stereoselectivity taking advantage of the in situ generation of a glycosylthiolate obtained from carbohydrate acetates in a few steps. Mild basic conditions make the conjugation reaction compatible with Fmoc-iodo-amino acids. To validate the strategy the glycosylated building blocks were used for SPPS and the unprecedented incorporation of a long thio-oligosaccharide to the peptide chain was demonstrated.
Solid-Phase Synthesis of New <i>S</i>-Glycoamino Acid Building Blocks
作者:Laurence Jobron、Gerd Hummel
DOI:10.1021/ol006019o
日期:2000.7.1
[GRAPHICS]Efficient synthesis of unprotected S-glycoamino acid building blocks in the solid phase by coupling a sugar 1-thiolate with iodine activated fluoren-9-ylmethoxycarbonyl (Fmoc) protected amino acids.