Synthesis and protonation behavior of 26-membered oxaaza and polyaza macrocycles containing two heteroaromatic units of 3,5-disubstituted pyrazole or 1-benzylpyrazole. A potentiometric and 1H and 13C NMR study

1. Arán, V.J.
2. Kumar, M.
3. Molina, J.
4. Lamarque, L.
5. Navarro, P.
6. García-España, E.
7. Ramírez, J.A.
8. Luis, S.V.
9. Escuder, B.