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C07D327/00—Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms
C07D327/02—Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms one oxygen atom and one sulfur atom
C07D327/06—Six-membered rings
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Organic Chemistry
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Pharmaceuticals Containing Other Organic And Inorganic Compounds
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Abstract
3-Carbamoyl-1-thia-isochroman-1,1-dioxide derivs. preparation. The title cpd. of general formula: (in which R1 and R2 is a lower alkyl residue and R3 is H or a lower alkyl gp.) and is prepd. by reacting with conc. H2SO4 at room temp., a cpd. of general formula: (where R4 is a carbonitrile or carbamoyl gp.). Pref. the deriv. is 3-carbamoyl-3-methyl-6,7-dimethoxy-1-thiisochroman-1.1-dioxide. Used pharmaceutically as anticonvulsant.
Methyl 7-o-methyl-6,8-dideoxy-6-(trans-1-methyl-4-propyl-l-2-pyrrolidinecarboxamido)-1-thio-l-threo-alpha-d-galacto-octopyranoside,the acid addition salts thereof and the production of these