Citation:
SUN Le, FAN Xiao-Dong, LIU Yu-Yang, WANG Liang. Synthesis and Characterization of Cyclodextrin Modified by Amino Acids[J]. Chinese Journal of Applied Chemistry,
;2008, 25(4): 405-408.
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We used glycin,L-tryptophan,L-glutamic acid and L-aspartic acid as substrates to react with 6-OTs-β-CD to yield amino acid modified β-cyclodextrinunder.The yields of the targeted compounds 2a~2d were 65.3%,27.9%,44.6% and 40.0%,respectively.It was determined that the optimum mass ratio between triethanolamine and water was 2:3.When the mole ratio between amino acid and cyclodextrin was 3:1,the yield was the best.The products were purified by chromatography on a Sephadex G-25 column with deionizated water as eluent,followed by recrystallization from water and ethanol.The molecular structures of the products were studied using FTIR,MS,1H NMR,13C NMR and element analysis.
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Keywords:
- cyclodextrin derivative,
- amino acid,
- synthesis,
- sephadex,
- recrystallization
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