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Synthesis and Characterization of Lactobionic Acid Grafted Phenylalanyl-Glycyl-Chitosan
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 Title & Authors
Synthesis and Characterization of Lactobionic Acid Grafted Phenylalanyl-Glycyl-Chitosan
Li, He-Ping; Li, Shan; Wang, Zhou-Dong; Qin, Long;
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In order to enhance the target action of chitosan-based drug, this paper firstly prepared phenylalanyl-glycylchitosan (Phe-Gly-CS) by grafting the key intermediate, bromoacetyl-phenylalanine (BA-Phe) onto chitosan. Then the target sugar molecule, lactobionic acid (LA), was grafted to Phe-Gly-CS and the topic compound lactobionic acid grafted phenylalanyl-glycyl-chitosan (Phe-Gly-CS-LA) was finally obtained in a yield of 78.8%. The product were characterized by FTIR, MS and 1H NMR. The preparing condition of BA-Phe was optimized as follows: the best pH was 10-11, the optimum temperature was , the reaction time was 1.5 h.
Grafted chitosan;Drug carrier;prepare;Lactobionic acid;
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