发明授权
US3864340A Process for producing 7-aclamida-3-cephem-4-carboxylic acids 失效
生产7-痤疮-3-头孢烯-4-羧酸的方法

Process for producing 7-aclamida-3-cephem-4-carboxylic acids
摘要:
7-ACYLAMIDE-3-CEPHEM-4-CARBOXYLIC ACIDS ARE PREPARED IN AN INDUSTRIALLY ADVANTAGEOUS MANNER, BY REACTING A 7-AMINO-3-CEPHAM4-CARBOXYLIC ACID WITH THE REACTIVE DERIVATIVES OF A CARBOXYLIC ACIDS IN THE PRESENCE OF ALCOHOLS, AS A SOLVENT, AND THEREAFTER, IF NECESSARY, REMOVING THE PROTECTING GROUP FOR THE AMINO GROUP OF THE ABOVE-OBTAINED PRODUCTS.
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