Syntheses and chemical properties of β-nicotinamide riboside and its analogues and derivatives

• Mikhail V. Makarov and
• Marie E. Migaud

Beilstein J. Org. Chem. 2019, 15, 401–430, doi:10.3762/bjoc.15.36

• adopted to access NR+ and NMN. 2.1. Glycosylation of nicotinamide As mentioned above, glycosylation of Nam may be performed either by using halosugars, i.e., 2,3,5-tri-O-acyl-D-ribofuranosyl halides, or by applying 1,2,3,5-tetra-O-acyl-D-ribofuranoses. The latter fully acylated sugars require different

D-Fructose-based spiro-fused PHOX ligands: synthesis and application in enantioselective allylic alkylation

• Michael R. Imrich,
• Jochen Kraft,
• Cäcilia Maichle-Mössmer and
• Thomas Ziegler

Beilstein J. Org. Chem. 2018, 14, 2082–2089, doi:10.3762/bjoc.14.182

• group participation in conformer 9b leads to the same anomer as predicted by the Fürst–Plattner rule. Neighboring group participation provides an alternative explanation for the already mentioned longer reaction times for the acylated sugars 7j–m. Because of the high delocalization of the positive

AuBr₃-catalyzed azidation of per-O-acetylated and per-O-benzoylated sugars

• Jayashree Rajput,
• Srinivas Hotha and
• Madhuri Vangala

Beilstein J. Org. Chem. 2018, 14, 682–687, doi:10.3762/bjoc.14.56

• -benzoylated disaccharides needed 2–3 h of heating at 55 °C. Keywords: acylated sugars; azidation; gold(III) bromide; N-glycoside; oxophilicity; Introduction The past few decades had seen the enrichment of transition metal complexes in various glycosylation strategies [1]. In particular, gold complexes with