“…1 Accordingly, natural and synthetic heteroaromatic compounds have been employed as drugs. 2 Focusing on benzo[b]furans (1), we came across an important subclass of heterocyclic aromatic compounds, which comprises various biological activities, such as anticancer, [3][4][5][6] antiviral, 7-9 anti-inflammatory, [10][11][12] and immunosuppressive. 13,14 In this sense, we present the structures of the benzo[b]furans obovaten (2), a natural product with pronounced antitumor activity, 15,16 and amiodarone (3), a commercial antiarrhythmic drug 17 ( Figure 1).…”