Enantio-differential approach using fluorescence-labeled phyllanthurinolactone, a leaf-closing factor of Phyllanthus urinaria L. |
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Authors: | Nobuki Kato |
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Institution: | Department of Chemistry, Faculty of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan |
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Abstract: | We report here the synthesis of enantio-pair-type fluorescence-labeled probes based on phyllanthurinolactone (1), which is a leaf-closing substance of Phyllanthus urinaria L. Moreover, the application of an enantio-differential approach to distinguish between specific and nonspecific binding of ligands and receptors was performed. Fluorescence studies using a natural-type probe 6 and a nonnatural-type probe 7 revealed that the target cell for 1 is a motor cell. Furthermore, our results lead to the suggestion that some receptors, which recognize the stereochemistry of the aglycon of 1, exist on the plasma membrane of the motor cell, as do leaf-opening substances. |
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Keywords: | Nyctinasty Leaf-closing substance Phyllanthurinolactone Fluorescence-probe Enantio-differential |
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