STUDIES ON THE STRUCTURE OF THE ADDUCT OF ANDROGRAPHOLIDE WITH SODIUM HYDROGEN SULFITE
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Abstract
The structure of the adduct of andrographolide with sodium hydrogen sulfite was established as (Ⅱ) by means of data analyses of MS, NMR, IR, UV and elementary analysis. The adduct is named 14-dehydroxyl-13-dehydroandrographolide-12-sulfonic acid sodium salt.
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