Panapophenanthrin, a Rare Oligocyclic Diterpene from Panus strigellus

Llanos-L{\'o}pez, Natalia A; Vasco-Palacios, A{\'\i}da M; S{\'a}nchez-Giraldo, Laura M; L{\'o}pez, Lina; Rojas, Luisa F; M{\'a}ndi, Attila; Kurt{\'a}n, Tibor; Marin-Felix, Yasmina; Ebada, Sherif;