Valparene: A tricyclic diterpene hydrocarbon with a new carbon skeleton.

1. Urones, J.G.
2. Marcos, I.S.
3. Basabe, P.
4. Alonso, C.A.
5. Diez, D.
6. Garrido, N.M.
7. Oliva, I.M.
8. Rodilla, J.S.
9. Slawin, A.M.Z.
10. Williams, D.J.