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Syntheses of fluorescence-labeled artificial leaf-opening substances, fluorescent probe compounds useful for bioorganic studies of nyctinasty

✍ Scribed by Minoru Ueda; Yoshiyuki Sawai; Shosuke Yamamura


Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
159 KB
Volume
41
Category
Article
ISSN
0040-4039

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✦ Synopsis


In a previous paper, the syntheses of potassium galactolespedezate (1) and potassium galactoisolespedezate (2), artificial leaf-opening substances useful for bioorganic studies of nyctinasty were reported. The fluorescent probe compounds, fluorescence-labeled galactoisolespedezates (3, 10, 13), designed on the basis of 1 and 2, were prepared. In particular, compound 3 was bioactive at 5Γ—10 -5 M, one-fiftieth as strong as the natural leaf-opening substance. This fluorescent probe would be useful for bioorganic studies of nyctinasty.


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Abstraet Potassiut~ lespedezate (1) is the leaf-opening substance of a nyetinastic plant, Lespedeza cuneata G. Don. We have synthesized two sugar-derivatives of 1, potassium galactolespedezate (4) and mannolespedezate (6). Both 4 and 6 were quite effective for the leaf-opening of Cass/a. raimosoides

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