Fig. 7From: Recent advances in the chemo-biological characterization of decalin natural products and unraveling of the workings of Diels–AlderasesGeneralized biosynthetic pathway of pyrrolidine-2-one decalin-containing metabolites produced by the coordinated action of a polyketide synthase (blue)-nonribosomal synthetase (orange) hybrid enzyme, a stand-alone enoyl reductase (ER, blue) and a Diels–Alderase (green)Back to article page