S-benzoxazolyl as a stable protecting moiety and a potent anomeric leaving group in oligosaccharide synthesis.
As a part of a program for developing new versatile building blocks for stereoselective glycosylation and convergent oligosaccharide synthesis, we demonstrated that S-benzoxazolyl (SBox) glycosides are stable toward major protecting group manipulations employed in carbohydrate chemistry. On the other hand, they can be glycosidated under relatively mild reaction conditions to afford either 1,2-trans or 1,2-cis-linked disaccharides. Selective and chemoselective activations of the SBox moiety were also proved to be feasible, which was demonstrated by synthesizing a number of oligosaccharide sequences.
Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA.
Medha N
MN
Kamat
Cristina
C
De Meo
Alexei V
AV
Demchenko
D001391:Azo Compounds / Q000737:chemistry*; D001554:Benzene / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry; D015394:Molecular Structure; D009844:Oligosaccharides / Q000138:chemical synthesis* / Q000737:chemistry
D001391:Azo Compounds; D006027:Glycosides; D009844:Oligosaccharides; D001554:Benzene