Structural characterization of an acidic polysaccharide from Dalbergia sissoo Roxb. leaves

► Dalbergia sissoo leaves are extensively used in traditional medicine for cure of diseases. ► Pure polysaccharide was isolated in 15% yield from the leaves. ► Monosaccharides composition and their ratios were determined. ► The complete structure of the polysaccharide was elucidated based on methylation, periodate oxidation and spectroscopic analysis as follows.