The amide group in the nine-membered ring of the title compound, C13H17NO5S
, has the trans conformation. The molecules are linked into infinite one-di
mensional chains by bifurcated intermolecular N-H ... O hydrogen bonds invo
lving the amide O atom and one of the sulfonyl O atoms of the same neighbou
ring molecule. The compound was prepared by the Friedel-Crafts acylation of
1,2-dimethoxybenzene and glutaric acid anhydride, followed by reduction of
the aryl ketone, esterification, chlorosulfonation, treatment with ammonia
, saponification and cyclization of the corresponding 5-(2-sulfamoylphenyl)
butanoic acid.