Abstract
Six monosaccharide derivatives of rotenone were designed and synthesized to assess whether rotenone could become phloem mobile by the addition of a monosaccharide group. Phloem mobility experiments showed that only D-glucose conjugates exhibit phloem transport properties in castor bean (Ricinus communis L.) seedlings. Two D-glucose conjugates, 2-O-β-D-glucopyranosyldemethylrotenone and 6'-O-β-D-glucopyranosyldalpanol, had significantly obtained systemicity compared with that of rotenone, and 6'-O-β-D-glucopyranosyldalpanol was more mobile than 2-O-β-D-glucopyranosyldemethylrotenone. Coupling with a monosaccharide core is a reasonable method for conferring phloem mobility on insecticides, but phloem mobility is also affected by the parent molecule and the position of the monosaccharide.
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