Synthesis of 2-amino-2-methyl-4-phosphonobutanoic acids by conjugate addition of lithiated bislactim ether derived from cyclo[Ala-D-Val] to vinylphosphonates

1. Ruiz, M.
2. Ojea, V.
3. Fernández, M.C.
4. Conde, S.
5. Díaz, A.
6. Quintela, J.M.