Remote substituent effects on the stereoselectivity and organocatalytic activity of densely substituted unnatural proline esters in aldol reactions

1. De Gracia Retamosa, M.
2. De Cõzar, A.
3. Sánchez, M.
4. Miranda, J.I.
5. Sansano, J.M.
6. Castellõ, L.M.
7. Nájera, C.
8. Jiménez, A.I.
9. Sayago, F.J.
10. Cativiela, C.
11. Cossío, F.P.