P. Melnyk et al., STEREOSPECIFIC PICTET-SPENGLER REACTION - SYNTHESIS OF CIS (-(1S,12BR)-1-AMINOINDOLOQUINOLIZIDINE FROM A PURE ALPHA-(S)-AMINOALDEHYDE DERIVATIVE()), Tetrahedron, 49(38), 1993, pp. 8589-8596
Pictet-Spengler reaction provides cis (+)-1-(S)-aminoindolo[2,3-a]quin
olizidine in an enantio- and diastereoselective manner, using an alpha
-aminoaldehyde derived from L-glutamic acid.