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S-benzoxazolyl as a stable protecting moiety and a potent anomeric leaving group in oligosaccharide synthesis.

ABSTRACT: 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.

SUBMITTER: Kamat MN

PROVIDER: S-EPMC2535572 | biostudies-literature | 2007 Aug

REPOSITORIES: biostudies-literature

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S-benzoxazolyl as a stable protecting moiety and a potent anomeric leaving group in oligosaccharide synthesis.

Kamat Medha N MN De Meo Cristina C Demchenko Alexei V AV

The Journal of organic chemistry 20070804 18

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 ...[more]

PMID: 17676919

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