Effective and chemoselective glycosylations using 2,3-unsaturated sugars

Shunichi Kusumi, Kaname Sasaki, Sainan Wang, Tatsuya Watanabe, Daisuke Takahashi, Kazunobu Toshima

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Glycosyl donors containing a double bond between C2 and C3 were designed by mimicking the reaction mechanism of lysozyme-initiated hydrolysis of mucopolysaccharides. It was found that, under various glycosylation conditions, the reactivities of 2,3-unsaturated glycosyl acetates were significantly higher, while those of the corresponding 2,3-unsaturated-4-keto glycosyl acetates were much lower than those of the corresponding 2,3-dideoxy (2,3-saturated) glycosyl acetates. Based on these results, chemoselective glycosylations were effectively realized via combinatorial techniques in short-steps using three types of glycosyl donors to construct several types of deoxyoligosaccharides. Furthermore, the highly reactive 2,3-unsaturated glycosyl acetates were found to be useful in the synthesis of the O-glycosides of low reactive tertiary alcohols.

Original languageEnglish
Pages (from-to)3164-3178
Number of pages15
JournalOrganic and Biomolecular Chemistry
Issue number14
Publication statusPublished - 2010 Jul 21

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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