6-(1-Hydroxyethyl)-2-(2-aminoethylthio)-1,1-disubstituted-1-carbadethiapen-2-em-3-carboxylic acids, a process for preparing the same, an antibiotic pharmaceutical composition comprising the same, intermediates useful in a synthesis of that kind and processes for preparing intermediates suitable for the synthesis of that kind

摘要

Disclosed are 1-substituted-6-(1-hydroxyethyl)-2-(2-aminoethylthio)-1-carbadethiapen-2-em-3-carboxylic acids (I) and their pharmaceutically acceptable salts and esters which are useful as antibiotics; such compounds are prepared by total synthesis.wherein R¹ and R² are, inter alia, substituted and unsubstituted alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl and the spiro substituent formed by the joinder of R¹ and R².