title: The allyl ether as a protecting group in carbohydrate chemistry. 3. The but-2-enyl ether group.
mesh_terms: D000498:Allyl Compounds; D004987:Ethers; D005690:Galactose; D006027:Glycosides / Q000138:chemical synthesis*; D009844:Oligosaccharides
chemical_list: D000498:Allyl Compounds; D004987:Ethers; D006027:Glycosides; D009844:Oligosaccharides; D005690:Galactose