The thermally induced formation of methyl-and phenylthiohydantoin amino acid derivatives from the corresponding N-methyl-and N-phenylthiourea derivatives of amino acids and peptides has been shown to occur in the mass spectrometer. A comparison of the mass spectra of a number of amino acid thiourea
Protein sequencing: Thermal conversion of thiazolinone derivatives of amino acids to thiohydantoins
β Scribed by Ruth L. Guyer; Charles W. Todd
- Book ID
- 102627284
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 343 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0003-2697
No coin nor oath required. For personal study only.
β¦ Synopsis
A method for converting thiazolinone derivatives of amino acids to their thiohydantoin derivatives is described. Because this method proceeds through a thermally induced intramolecular rearrangement, the amide groups of glutamine and asparagine are not hydrolyzed. Special procedures are not required for the recovery of the derivatives of arginine and histidine. Finally, the thermal method is more rapid than the conventional aqueous conversion procedure.
π SIMILAR VOLUMES
A novel and efficient method to prepare amino acid thiohydantoins, which are required as reference standards for development of C-terminal protein sequencing, is reported. Amino acid thiohydantoins were prepared using a straightforward method involving reaction of 20 free amino acids with acetyl chl
Amino Acid-Derived Iodobenzene Dicarboxylates: Reagents for Oxidative Conversion of Alkenes to Amino Acid Esters. -The preparation of new, chiral iodobenzenecarboxylates derived from natural L-amino acids is presented. The usefulness of thus obtained (III) is shown in the reaction with tetrahydropyr
The aminolysis of products of sequential degradation of proteins and peptides by methylamine is an alternative method of conversion of the unstable 5-alkyl-2-anilino-4-thiazolinones into the stable methyl amides of N alpha-phenylthiocarbamoyl amino acids. The volatility of methylamine permits use in
5-Chloro-3-penten-2-one reacts with the amino group of homochiral amines, amino alcohols, amino acid esters to form corresponding 2-pyrrole derivatives in good yield and without racemization. (~) 1997 Elsevier Science Ltd. All rights reserved.