Cover Picture (Angew. Chem. Int. Ed. Engl. 11/1994)


original image

The cover picture shows a bay boletus. xerocomus badius. The chemical formula of badion A. a dye found in the cap of this mushroom, is superimposed on the right of the photo. The identical partial structures in the formula (highlighted in green and yellow) were identified with the genetic computer algorithm presented by M. Wagener and J. Gastteiger on p. 1189 ff. The steps in this algorithm are shown schematically on the left. This procedure facilitates comparison of structures, a process required for the analysis of biological activity, the elucidation of biosynthetiic routes, or the identifications of appropriate starting materials for a synthesis. (Photography: W. Steglich. Munich)