Metabolism of Pipecolic Acid in a Pseudomonas Species

L-lysine-.alpha.-ketoglutarate aminotransferase. I. Identification of a product, .DELTA.1-piperideine-6-carboxylic acid

“…It was reported that both 1-piperideine-2-carboxylic acid and ^piperideine-ó-carboxylic acid react with o-aminobenzaldehyde to form dihydroquinazolinium salts (Basso et al, 1962;Larson et al, 1963). The absorption spectrum of the o-aminobenzaldehyde derivative of X is slightly but distinctly different from that of 1-piperideine-2-carboxylic acid, although such derivatives were not isolated because of their instability.…”