Synthesis of ecteinascidin ET–743 and phthalascidin Pt–650 from cyanosafracin B - Cuevas, C; Pérez, M; Martín, M J; Chicharro, J L; Fernández-Rivas, C; Flores, M; Francesch, A; Gallego, P; Zarzuelo, M; de La Calle, F; García, J; Polanco, C; Rodríguez, I; Manzanares, I (Org Lett, 2000)