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  • Title: Effect of Optically Active Ethyl 2-Phthalimidooxypropionate on the Growth of Cress, Lepidium sativum.
    Author: Takekida Y, Okazaki M, Shuto Y.
    Journal: Biosci Biotechnol Biochem; 1999; 63(10):1831-3. PubMed ID: 26300175.
    Abstract:
    The effects of 2-phthalimidooxyalkanoic acid derivatives on the germination and root-growth of cress were examined. Since 2-phthalimidooxypropionates were most effective, the optically active ethyl esters were prepared. As the result of biological testing, the (S)-(-)-isomer exhibited stronger activity than the (R)-(+)-isomer. This result is contrary to those from commercial herbicides with similar structures, phenoxy- and oxyphenoxy-propionate-type compounds, where the (R)-isomers are generally known to be the active principles.
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