Preparation of Shortened Norbelladine Analogs

by Ulrich Jordis, Johannes Fröhlich, Matthias Treu
Published 2002-10-01

Influence of Some Thia- or Azasubstituted Butyric Acid Derivatives on the Chemical Shift of the Benzene Ring Carbon Atoms

by Johannes Fröhlich, Fritz Sauter, Viktor Milata
Published 2000-03-01