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本文报道呋脲苄头孢菌素衍生物Ⅲ_(a～c)的缩合成,将呋喃甲酰脲苯乙酸钠形成混合酸酐(Ⅰ)与3-取代基7β-氨基头孢烯的二苯甲酯Ⅱ_(a～c)缩合后,经三氯化铝一苯甲醚脱酯而成。 Ⅲ_(a～c)用H_2O_2(32％)分别在CH_3COOH
This paper reports the furosemide benzyl cephalosporin derivative Ⅲ_ (a ~ c) condensation into the furfural sodium phenylacetate to form mixed anhydride (Ⅰ) and the 3-substituent 7β-aminocephem diphenyl ester Ⅱ_ (a ~ c) condensation, the aluminum chloride by an ether desolization. Ⅲ_ (a ~ c) with H_2O_2 (32%) in CH_3COOH