An efficient synthesis of new caffeine-based chalcones, pyrazolines and pyrazolo[3,4- b ][1,4]diazepines as potential antimalarial, antitrypanosomal and antileishmanial agents

1. Insuasty, B.
2. Ramírez, J.
3. Becerra, D.
4. Echeverry, C.
5. Quiroga, J.
6. Abonia, R.
7. Robledo, S.M.
8. Vélez, I.D.
9. Upegui, Y.
10. Muñoz, J.A.
11. Ospina, V.
12. Nogueras, M.
13. Cobo, J.