Details van artikel 219 van 252 gevonden artikelen
Synthetic Studies on Sialoglycoconjugates 36: α-Selective Glycoside Synthesis of N-Acetylneuraminic Acid with the Secondary Hydroxyl Group in D-Glucofyranose, 2-Acetamido-2-deoxy-D-glucopyranose and D-Galactopyranose Derivatives
Titel:
Synthetic Studies on Sialoglycoconjugates 36: α-Selective Glycoside Synthesis of N-Acetylneuraminic Acid with the Secondary Hydroxyl Group in D-Glucofyranose, 2-Acetamido-2-deoxy-D-glucopyranose and D-Galactopyranose Derivatives
Coupling of the secondary hydroxyl group in the 6-O-benzoyl derivatives 3, 5 and 8, prepared from 2-(trimethylsilyl)ethyl β-D-glucopyranoside (2), 2-acetamido-2-deoxy-β-D-glucopyranoside (4), and 2-acetamido-2-deoxy-β-D-galactopyranoside (6), with methyl (methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-2-thio-D-glycero-α-D-galacto-2-nonulopyranosid)onate (1) as the glycosyl donor in acetonitrile in the presence of dimethyl(methylthio)sulfonium triflate (DMTST) as a glycosyl promoter, exclusively gave the cx-glycosides at C-2 in 3, at C-3 in 5 and 8, respectively.
Uitgever:
Taylor & Francis
Bronbestand:
Elektronische Wetenschappelijke Tijdschriften
Details van artikel 219 van 252 gevonden artikelen