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Updated: Jul 12, 2025

Hierarchical and Programmable One-Pot Oligosaccharide Synthesis
Published on: September 6, 2019
A useful strategy for synthesis of the disaccharide of OSW-1
Bin Wang1, Yan Zhang1, Xiangyan He2
1Department of Pharmacy, People's Hospital of Xinjiang Uygur Autonomous Region Urumqi Xinjiang Uygur Autonomous Region China binw4870@gmail.com.
Abstract:
A flexible, efficient, and practical synthesis route was developed to synthesize an OSW-1 disaccharide. The synthesis took 13 steps from l-arabinose and d-xylose derivatives, and the overall yield was 7.2%. The region preferentially protects various d-xylose hydroxides because the TBS group selectively reacts with this hydroxide at low concentrations due to greater activity at the C-4 hydroxyl of d-xylose. Then, high efficiency selectively protects C-2 hydroxyl and C-3 hydroxyl of d-xylose, respectively. The first high yield of glycosylation on an OSW-1 synthesis disaccharide was achieved by taking sulfide donor 4 with β-PMP anomeric l-arabinose acceptor 12. The cytotoxicity reveals that the analogy has a high IC50 for a variety of cell types. This approach should provide a versatile way to modify OSW-1's disaccharide.
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