The invention relates to novel 4-oxo-azetidine-2-sulfonic acids and their salts or the formula I
wherein:
R¹ =hydrogen, halogen, phenylacetamido;
R² =hydrogen, halogen, phenylacetamido, phenoxyacetamido, phthalimido, 5-methyl-3-o-chlorophenyl-isoxazole-4-carboxamido;
R³ =hydrogen, alkali metal, alkaline earth metal, quaternary ammonium group;
R⁴ =hydrogen, SO₂O ⁻⁺ NBu₄-n,
(CH₃)₂C=C-COOCH₃,
(CH₃)₂C=C-COOCH₂Ph,
(CH₃)₂C=C-COOCH₂-C₆H₄-NO₂-p,
(CH₃)₂C=C-COOCH₂-C₆H₄-CH₃-m.
The products (I) may be used as intermediates in the synthesis of beta-lactamic antibiotics or as components in antimicrobial preparations.
本发明涉及新型 4-氧代氮杂
环丁烷-2-
磺酸及其盐或式 I
其中
R¹ =氢、卤素、苯乙酰胺基;
R² =氢、卤素、苯乙酰胺基、苯氧基乙酰胺基、邻苯二甲
酰亚胺基、5-甲基-3-邻
氯苯基
异噁唑-4-甲酰胺基;
R³ = 氢、碱
金属、碱土
金属、季
铵基团;
R⁴ = 氢、SO₂O -⁺ NBu₄-n、
(CH₃)₂C=C-cooch₃ 、
(CH₃)₂C=C-COOCH₂Ph、
(CH₃)₂C=C-COOCH₂-C₆H₄-NO₂-p、
(CH₃)₂C=C-COOCH₂-C₆H₄-CH₃-m.
产品 (I) 可用作合成β-内酰胺类抗生素的中间体或抗菌制剂的成分。