Michael addition reactions between chiral equivalents of a nucleophilic glycine and (S)- or (R)-3-[(E)-enoyl]-4-phenyl-1,3-oxazolidin-2-ones as a general method for efficient preparation of β-substituted pyroglutamic acids. Case of topographically controlled stereoselectivity

1. Soloshonok, V.A.
2. Cai, C.
3. Yamada, T.
4. Ueki, H.
5. Ohfune, Y.
6. Hruby, V.J.