| 摘要 |
It is possible to prepare cationic derivatives of fructans, such as inulin, in which a nitrogen atom having substituents R1, R2 and R3 is bonded to one or more anhydrofructose units via a straight-hain or branched C2-C6 alkylene group, which is optionally preceded by a carbonyl group or interrupted by one or two oxygen atoms or imino or alkylimino groups and optionally substituted by one or two hydroxyl groups or amine groups or a carboxyl or carbamoyl group, the substituents R1, R2 and R3 having the following meaning: R1 and R2 each represent hydrogen methyl, carboxymethyl, phosphonomethyl, ethyl , hydroxyethyl, propyl, isopropyl, allyl, hydroxypropyl or dihydroxypropyl or, together with the nitrogen atom, form a cyclic group; R3 represents hydrogen, C1-C18 alkyl, C3-C18 alkenyl, alkynyl or cycloalkyl, C4-C18 cycloalkyl-alkyl or C7-C18 aralkyl or is bondedvia an alkylene group to an oxygen atom of a subsequent anhydrofructose unit. Processes for preparing these derivatives and uses thereof are describ ed as well.
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