Optical Resolution of DL-Aspartic Acid Copper Complex by the Use of Biopolymers

Nature ◽  
1968 ◽  
Vol 218 (5137) ◽  
pp. 199-199 ◽  
Author(s):  
KAORU HARADA
Keyword(s):  
Aspartic Acid ◽  
Copper Complex ◽  
Optical Resolution

New Optical Resolution Method for Racemic DL-Aspartic Acid by Crystallization in the Presence of d- or l-Asparagine as a Tailor-Made Additive

2015 ◽  
Vol 48 (11) ◽  
pp. 903-908 ◽  
Author(s):  
Hiroyasu Sato ◽  
Norihito Doki ◽  
Masaaki Yokota ◽  
Kenji Shimizu ◽  
Shingo Yano
Keyword(s):  
Aspartic Acid ◽  
Optical Resolution ◽  
Resolution Method

A Total Resolution of Aspartic Acid Copper Complex by Inoculation

Nature ◽  
1962 ◽  
Vol 194 (4830) ◽  
pp. 768-768 ◽  
Author(s):  
KAORU HARADA ◽  
SIDNEY W. FOX
Keyword(s):  
Aspartic Acid ◽  
Copper Complex

scholarly journals Confirmation of d-aspartic acid in the novel dipeptide β-aspartylglycine isolated from tissue extract of Aplysia kurodai

1989 ◽  
Vol 263 (2) ◽  
pp. 617-620 ◽  
Author(s):  
M Sato ◽  
T Yamaguchi ◽  
N Kanno ◽  
Y Sato
Keyword(s):  
Aspartic Acid ◽  
Body Wall ◽  
Optical Resolution ◽  
Paper Electrophoresis ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Optical Rotatory Dispersion ◽  
The Novel ◽  
Reactive Compound ◽  
High Concentrations

A novel o-phthalaldehyde-reactive compound was found in the h.p.l.c. chromatogram of Aplysia kurodai extract. This compound was isolated by ion-exchange chromatography and preparative high-voltage paper electrophoresis. It was shown by optical-rotatory-dispersion spectrum and optical-resolution h.p.l.c. analysis that this compound consisted of equimolar amounts of D-aspartic acid and glycine. This compound resisted cleavage in the Edman reaction. This peptide was inferred to be beta-D-aspartylglycine, and this was confirmed by synthesis. beta-D-Aspartylglycine was detected in all tissues of Aplysia kurodai, with especially high concentrations in body wall (skin and muscle) and gill.

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