Lonn, Hans published an article in Carbohydrate Research. The title of the article was 《Synthesis of a tri- and a heptasaccharide which contain α-L-fucopyranosyl groups and are part of the complex type of carbohydrate moiety of glycoproteins》.Formula: C22H25NO9S The author mentioned the following in the article:
Me triflate-promoted condensation of Et 4,6-O-benzylidene-2-deoxy-2-phthalimido-1-thio-3-O-(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-β-D-glucopyranoside with benzyl 3,4,6-tri-O-benzyl-α-D-mannopyranoside and with benzyl 2,4-di-O-benzyl-3,6-di-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-α-D-mannopyranoside gave a trisaccharide and a heptasaccharide derivative, resp. The trisaccharide α-L-Fucp-(1→3)-β-D-GlcpNAc-(1→2)-D-Man and the heptasaccharide I, which are parts of the complex type of glycoproteins, were obtained by removal of the protecting groups and N-acetylation. The results came from multiple reactions, including the reaction of Ethyl 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-thioglucopyranoside(cas: 99409-32-2Formula: C22H25NO9S)
Ethyl 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-thioglucopyranoside(cas: 99409-32-2) belongs to indole.The indole subunit is an almost ubiquitous component of biologically active natural products, and its study has been the focus of research for decades.Formula: C22H25NO9SThey are capable of binding to a variety of receptors with high affinity and thus have applications in a wide range of therapeutic areas.
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles