β-Pyrazol-1-ylalanine, an amino acid from water-melon seeds (Citrullus vulgaris)
- 1 December 1960
- journal article
- research article
- Published by Portland Press Ltd. in Biochemical Journal
- Vol. 77 (3), 543-546
- https://doi.org/10.1042/bj0770543
Abstract
A heterocyclic amino acid, (-)-[beta]-pyrazol-1-ylalanine, was isolated from the seed of watermelon (Citrullus vulgaris) and its structure, confirmed by comparison with synthetic material. DL-[beta]-Pyrazol-1-ylalanine was synthesized in poor yield by condensation of silver pyrazole with the methyl ester of [beta]-chloroalanine hydrochloride. The amino acid was decomposed by treatment with 55% (w/w) hy-driodic acid to give alanine and a substance tentatively identified as an iodopyrazole. The distribution and possible method of biogenesis of the amino acid were examined briefly.Keywords
This publication has 7 references indexed in Scilit:
- alpha-Amino-beta-(pyrazolyl-N) propionic acid: a new amino-acid from Citrullus vulgaris (water melon).1959
- Tryptophan Synthetase Activity in Pea Seedling Extracts.Plant Physiology, 1959
- Die freien Aminosäuren der Samen vonAcacia Willardiana (Mimosaceae).Isolierung von Willardiin, einer neuen pflanzlichen Aminosäure, vermutlich L-Uracil-[β-(α-amino-propionsäure)]-(3)Hoppe-Seyler´s Zeitschrift Für Physiologische Chemie, 1959
- [2, 4-Dihydroxy-6-methylphenylalanine, a new amino acid from the seeds of Agrostemma githago].1958
- ‘Multiple Dipping’ Procedures in Paper Chromatography: a Specific Test for Hydroxy-prolineNature, 1953
- Colour Reactions on Paper Chromatograms by a Dipping TechniqueNature, 1953
- Displacement chromatography on synthetic ion-exchange resins. 3. Fractionation of a protein hydrolysate.1949