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Synthesis of benzylpenicillin sulfoxide p-methoxybenzyl ester
Pages: 586-
587,637
Year: 2005
Issue:
10
Journal: CHINESE JOURNAL OF ANTIBIOTICS
Keyword: 苄青霉素亚砜酯; 头孢素菌; GCLE;
Abstract: 以苄青霉素钾盐为原料,用低浓度CH3CO3H作氧化剂,所得苄青霉素亚砜以固体形式直接从溶液中结晶析出,再以对-甲氧基苄氯酯化,制得头孢类药物的母核7-苯乙酰胺基-3-氯甲基头孢烷酸对甲氧苄酯(GCLE)的关键中间体苄青霉素亚砜对-甲氧基苄酯,实验总收率82.6%.本工艺只使用一种有机溶剂,缩短了反应时间,降低了成本,适合规模生产.
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