The acidic amino acids of tulip: isolation of gamma-ethylideneglutamic acid.
1. gamma-Ethylideneglutamic acid has been isolated from fruit capsules of tulip plants. 2. The assigned structure was indicated by examining the products formed after oxidation and catalytic hydrogenation and was confirmed by nuclear-magnetic-resonance spectroscopy and by synthesis of gamma-ethylglutamic acid. 3. The ability of gamma-ethylideneglutamic acid to participate in transamination and decarboxylation reactions was examined.
D055598:Chemical Phenomena; D002621:Chemistry; D002854:Chromatography, Paper; D005971:Glutamates; D066298:In Vitro Techniques; D009682:Magnetic Resonance Spectroscopy; D010944:Plants
D005971:Glutamates