New (RS)-benzoxazepin-purines with antitumour activity: The chiral switch from (RS)-2,6-dichloro-9-[1-(p-nitrobenzenesulfonyl)-1,2,3,5-tetrahydro-4,1- benzoxazepin-3-yl]-9H-purine

1. López-Cara, L.C.
2. Conejo-García, A.
3. Marchal, J.A.
4. MacChione, G.
5. Cruz-López, O.
6. Boulaiz, H.
7. García, M.A.
8. Rodríguez-Serrano, F.
9. Ramírez, A.
10. Cativiela, C.
11. Jiménez, A.I.
12. García-Ruiz, J.M.
13. Choquesillo-Lazarte, D.
14. Aránega, A.
15. Campos, J.M.