Preparation of S-glycoside surfactants and cysteine thioglycosides using minimally competent Lewis acid catalysis

- Thioglycosides can be readily prepared from per-acetylated carbohydrate donors.
- S-Glycosylations are catalyzed using the minimally competent Lewis acid InBr3.
- Only β anomers are formed.
- Glycosylation of cysteine and a library of thio-glycolipids are produced by Zemplèn deacylation.