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CD-spectra of N-2,4-dinitrophenyl(dnp) derivatives of aromatic amino acids: A simple method for determining their absolute configuration

โœ Scribed by Masao Kawai; Ukon Nagai; Motoko Katsumi


Publisher
Elsevier Science
Year
1975
Tongue
French
Weight
152 KB
Volume
16
Category
Article
ISSN
0040-4039

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โœฆ Synopsis


In the course of systematic study of the chlroptlcal propertles of DNP-c(amino acids, we noted that CD-spectra of DNP-aromatlc amino acids show characterlstlc pattern, which 1s somewhat different from those of Na,Nw-dl-DNPamino aclds1)'2). They have lower intensity and their shorter wavelength band (ca.335 nm) lies shorter than that(ca.360 nm) of the di-DNP-amino acids.

The CD-spectra of common DNP-aromatic amino acids are reproduced in Fig. 3' C"2


๐Ÿ“œ SIMILAR VOLUMES


A method for determining absolute config
โœ Ukon Nagai; Masao Kawai; Takashi Yamada; Shigeru Kuwata; Hiroshi Watanabe ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 147 KB

Aromatic B-amino acids were converted to the Dnp derivatives, and aliphatic ones to Dnp-pMA derivatives. The sign of the Cotton effect near 400 nm reflected the configuration at the B-position without exception. Thus, the relation seems to afford a new reliable method for determining the absolute