A New Approach for the Synthesis of Hyperbranched N-Glycan Core Structures from Locust Bean Gum
摘要:
A novel protocol for the synthesis of general N-glycan core structures was established by means of Man beta(1 -> 4)Man peracetate derived from a naturally abundant locust bean gum as a key starting material. Phenyl (2-O-benzy1-4,6-O-benzylidine-beta-D-mannopyranosyl)-(1 -> 4)-3,6-di-O-benzyl-2-azido-2-deoxy-1-thio-beta-D-glucopyranoside facilitated the synthesis of key intermediates leading to hyperbranched N-glycan core structures.
Rapid synthesis of N-glycan oxazolines from locust bean gum via the Lafont rearrangement
作者:Sivasinthujah Paramasivam、Antony J. Fairbanks
DOI:10.1016/j.carres.2019.03.010
日期:2019.5
Enzymatic degradation of locust bean gum provides a Manβ(1 → 4)Man disaccharide, which may be converted into the core Manβ(1 → 4)GlcNAc disaccharide unit of all N-glycans via conversion to a 2-iodo-glycosyl azide, and Lafont rearrangement. The Manβ(1 → 4)GlcNAc disaccharide may be used as a key intermediate for elaboration into more complex N-glycan structures providing a route to N-glycan oxazolines