Solid-state conformation of copolymers of ?-benzyl-L-aspartate withL-alanine,L-leucine,L-valine, ?-benzyl-L-glutamate, or ?-carbobenzoxy-L-lysine
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منابع مشابه
2-Acetamido-N-benzyl-1,4-imino-1,2,4-trideoxy-l-xylitol (N-benzyl-l-XYLNAc)
X-ray crystallography defines the relative configuration at the three-stereogenic centres in the title compound N-benzyl-l-XYLNAc, C(14)H(20)N(2)O(3). The five-membered pyrrolidine ring adopts an envelope conformation with the N atom lying out of the plane of the other four atoms. In the crystal structure, inter-molecular O-H⋯O, N-H⋯O and O-H⋯N hydrogen bonds link the mol-ecules into chains alo...
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In the title compound, C14H20O5, an inter-mediate in the synthesis of oligosaccharides, the glycosidic [H-C-O-C(H3)] torsion angle ϕH is 52.3° and the exo-cyclic [H-C-O-C(H2)] torsion angle θH is -11.7°. The hexa-pyran-ose ring has a chair conformation. In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, forming chains propagating along [010]. Enclosed within the chains are R 3 (3)(1...
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In the present study, we report the finding of high concentrations of D-Asp (D-aspartate) in the retina of the cephalopods Sepia officinalis, Loligo vulgaris and Octopus vulgaris. D-Asp increases in concentration in the retina and optic lobes as the animal develops. In neonatal S. officinalis, the concentration of D-Asp in the retina is 1.8+/-0.2 micromol/g of tissue, and in the optic lobes it ...
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ژورنال
عنوان ژورنال: Biopolymers
سال: 1980
ISSN: 0006-3525,1097-0282
DOI: 10.1002/bip.1980.360190905