ES398186A1 - Procedure for the preparation of 3-sulfoalquil-6-hidroxi-piridonas- (2). (Machine-translation by Google Translate, not legally binding)
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Procedure for the preparation of 3-sulfoalquil-6-hidroxi-piridonas- (2). (Machine-translation by Google Translate, not legally binding)
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Novartis AG
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Ciba Geigy AG
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Priority to ES398186ApriorityCriticalpatent/ES398186A1/en
Publication of ES398186A1publicationCriticalpatent/ES398186A1/en
Process for the preparation of 3-sulfoalkyl-6-hydroxy-pyridones- (2) characterized by reacting 6-hydroxy-pyridones- (2) of the formula ** (see formula) ** And optionally ** (see formula) ** In which R and r'each denote a hydrogen atom, an alkyl or aryl radical or a heterocyclic radical, and W means a bifunctional substituent, preferably the group -c0-nh2, with bisulfite addition compounds to aldehydes, the reaction being conducted preferably in aqueous solution and at normal or high temperature. (Machine-translation by Google Translate, not legally binding)
ES398186A1971-12-211971-12-21Procedure for the preparation of 3-sulfoalquil-6-hidroxi-piridonas- (2). (Machine-translation by Google Translate, not legally binding)
ExpiredES398186A1
(en)
Procedure for preparing inzzles carrying the acetoximethyl-replaced group in position n. (Machine-translation by Google Translate, not legally binding)
A new procedure for the obtaining of a salt 1,2,3,6 -tetrahydro-2,6-dioxo-4-pyridine-carboxylate of 1- cinamid-4-diphenyl-methylpiperacin. (Machine-translation by Google Translate, not legally binding)