Use of azalactones in a 'Pictet-Spengler-like' reaction. Stereoselective synthesis of 1,3,4-substituted tetrahydro-β-carbolines

1. Ezquerra, J.
2. Lamas, C.
3. Pastor, A.
4. Alvarez, P.
5. Vaquero, J.J.
6. Prowse, W.G.