发明授权
US4264621A 5-Substituted-3 -(2-aminoethylthio)-6-(1-hydroxyethyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-en e-2-carboxylic acid 失效
5-取代的3-(2-氨基乙硫基)-6-(1-羟基乙基)-7-氧代-1-氮杂双环[3.2.0]庚-2-烯-2-羧酸

5-Substituted-3
-(2-aminoethylthio)-6-(1-hydroxyethyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-en
e-2-carboxylic acid
摘要:
Antibiotic 5-substituted-3-(2-aminoethylthio)-6-(1-hydroxyethyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acids (I) are disclosed: ##STR1## wherein R is alkyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl or heteroaryl.
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