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Dextran‐formamidine esters (dextran‐N‐[(dimethylamino)methylene]‐β‐alanine ester) with different degrees of substitution (0.45–0.92) are synthesized in an one‐pot reaction. Dextran (Mw 60 000 g mol−1) is allowed to react with unprotected beta‐alanine and iminium chloride and investigated regarding the potential as gene delivery system for the transfer of plasmid DNA. With degrees of substitution ≥...
An efficient one-pot synthesis of new dextran derivatives is described. The functional groups of β-alanine, i.e., the carboxyl- and amine group, are converted independently in one-step by iminium chloride to form products with a single substituent. The dextran N-[(dimethylamino)methylene]-β-alanine ester is formed selectively. The structure of the resulting polymers is unambiguously determined by...
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