Synthesis and complete assignment of the 1H and 13C NMR signals of some oxopyrancoumarin and oxofuropyrancoumarin derivatives

1. Quezada, E.
2. Delogu, G.
3. Viña, D.
4. Santana, L.
5. Picciau, C.
6. Podda, G.
7. Uriarte, E.