Abstract

Abstract2‐Aminoethylphosphonic acid and fosfomycin produced on feeding D‐[1‐2H1]glucose to Tetrahymena thermophila and Streptomyces fradiae, respectively, indicate that the phosphoenolpyruvate mutase catalyzes the stereospecific transfer of the phospho group of (Z)‐phosphoenol‐[3‐2H1]pyruvate from oxygen to carbon from the si face. 2H‐NMR spectroscopy was used to determine the configuration at C‐1 of biosynthetically formed 2‐amino‐[1‐2H1]ethylphosphonic acid after derivatization with (—)‐camphanoyl chloride and diazomethane.

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