l aspartic acid/dichloromethane

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Poly(L-aspartic acid) derivative soluble in a volatile organic solvent for biomedical application.

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Prijava / prijava

In order to develop a novel functional poly(L-amino acid) that can dissolve in volatile organic solvents, we prepared poly[L-aspartic acid-g-(3-diethylaminopropyl)]-b-poly(ethylene glycol) [poly(L-Asp-g-DEAP)-b-PEG] via the conjugation of 3-diethylaminopropyl (DEAP) to carboxylate groups of

N-alkoxycarbonyl-glutamic and aspartic acids. Studies on the activation and cyclodehydration and side-reaction encountered in analysis of glutamic acid using Fmoc-chloride.

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Prijava / prijava

N-Alkoxycarbonylaminodicarboxylic acids were reacted in dichloromethane with N-ethyl-N'-(dimethylaminopropyl)carbodiimide hydrochloride, and with methyl chloroformate in the presence of N-methylmorpholine. Removal of secondary products by washing the mixtures with aqueous solutions gave good yields

2,4-Dimethyl-5(4H)-oxazolone as reagent for activation and coupling of N-substituted aspartic acid.

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Prijava / prijava

Reaction of the title oxazolone with N-benzyloxycarbonyl-L-aspartic acid in dichloromethane followed by addition of phenylalanine methyl ester.HCl and N-methylmorpholine gave a 90% yield of a mixture of alpha- and beta-isomers of Z-aspartylphenylalanine methyl esters in a 7:3 ratio. Reaction of the

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Herbal & Natural Medicine

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