Beiträge zur Chemie der Pyrrolpigmente, 81. Mitt.: Kraftfeldrechnungen an Gallenfarbstoffen: Die Energiehyperfläche von 2,3-Dihydrobilin-1,19-dionen

Summary The energy hypersurface of 2,3-dihydrobilin-1,19-diones is analyzed with respect to their conformational aspects using a specialized force field. Estimations of helix interconversion energies, chiral discrimination, geometries of global minima, and relative energies and geometries of diastereomeres compare favourably with available experimental data from the literature.