- 3,5-DINITRO-1-(4-NITROPHENYL)-4-PYRIDONE, A NOVEL AND CONVENIENT PROTECTING REAGENT FOR PRIMARY AMINES.
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Crystalline derivatives of the following L-amino acids modified by 2,5-dinitro-4-pyridone have been prepared: glycine, alanine, valine, leucine, isoleucine, phenylalanine, serine, threonine, tyrosine, aspartic acid, asparagine, glutamic acid, glutamine, tryptophan, histidine, arginine, methionine and lysine. The modified L-amino acids (DNPY-L-amino acids) could be purified by recrystallization and were characterized by **1H-NMR, IR and UV spectral data. The molar rotation of the DNPY-L-amino acids varied from 2 to 100 times those of the parent amino acids. The effectiveness of 3,5-dinitro-1-(4-nitrophenyl)-4-pyridone as an amino-protecting reagent of L-amino acids is described.
- Matsumura,Kobayashi,Nishikawa,Ariga,Tohda,Kawashima
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p. 1961 - 1965
(2007/10/02)
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- 3,5-DINITRO-1-(p-NITROPHENYL)-4-PYRIDONE AS A NOVEL PROTECTIVE GROUP OF PRIMARY AMINES
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3,5-Dinitro-1-(p-nitrophenyl)-4-pyridone is proposed as a novel protective group for primary amines, especially amino acids, based on the results of the transformation of 1-substituated 3,5-dinitro-4-pyridones with primary amines.
- Matsumura, Eizo,Ariga, Masahiro,Tohda, Yasuo,Kawashima, Toshihide
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p. 757 - 758
(2007/10/02)
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