Block synthesis of blood group tetrasaccharides B (types 1, 3 and 4)
摘要:
3-Aminopropyl glycosides of the tetrasaccharides Gal alpha 1-3(Fuc alpha 1-2)Gal beta 1-3GlcNAc beta (B type 1), Gal alpha 1-3(Fuc alpha 1-2)Gal beta 1-3GalNAc alpha (B type 3), and Gal alpha 1-3(Fuc alpha 1-2)Gal beta 1-3GalNAc beta (B type 4) were synthesised using acetylated Gal alpha 1-3(Fuc alpha 1-2)Gal trichloroacetimidate 4 as a glycosyl donor at the key stage.