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Glaxo Laboratories Ltd
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Glaxo Laboratories Ltd
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Priority to ES0455922ApriorityCriticalpatent/ES455922A1/es
Publication of ES455922A1publicationCriticalpatent/ES455922A1/es
Un procedimiento de preparación de derivados de cefalosporina de la fórmula general **(fórmula)** (en la que R1 es un grupo alcohilo primario o secundario que contiene de 1 a 4 átomos de carbono, y R2 es un grupo alcohilo primario o secundario que contiene de 1 a 6 átomos de carbono, siempre que al menos uno de los grupos R1 y R2 sea metilo), caracterizado por, o bien (A) hacer reaccionar ácido (6R,7R)-3-carbamoiloximetil-7-[(Z)-2-(fur-2-il)-2-metoxiiminoacetamino]cef-3-em-4-carboxílico (es decir cefuroxima) o una sal del mismo con un éster halogenado.
ES0455922A1977-02-151977-02-15Un procedimiento para la preparacion de derivados de cefalosporina
ExpiredES455922A1
(es)
Procédé de préparation d'une forme cristalline du sel de sodium d'un dérivé oximiné de l'acide 7- amino thiazolyl acétamido céphalosporanique.