Synthesis of methyl 4-aryl-6-methyl-4,7-dihydro-1H-pyrazolo-[3,4-b]pyridine-5-carboxylates from methyl 4-aryl-6-methyl-2-oxo-1,2,3,4-tetrahydropyridine-5-carboxylates

1. Verdecia, Y.
2. Suárez, M.
3. Morales, A.
4. Rodríguez, E.
5. Ochoa, E.
6. González, L.
7. Martín, N.
8. Quinteiro, M.
9. Seoane, C.
10. Soto, J.L.