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Syntheses of novel photoaffinity probes for bioorganic studies on nyctinasty of leguminous plants

✍ Scribed by Takanori Sugimoto; Tomohiko Fujii; Yasumaru Hatanaka; Shosuke Yamamura; Minoru Ueda

Publisher
Elsevier Science
Year
2002
Tongue
French
Weight
113 KB
Volume
43
Category
Article
ISSN
0040-4039

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✦ Synopsis

Novel and non-radioactive photoaffinity probes (1 and 2) for the bioorganic study of nyctinasty are designed and synthesized based on potassium isolespedezate (3), which induce leaf-opening against the leaf of Cassia mimosoides L. These probes bear a trifluoromethyldiazirine or diazophenyl group for photoaffinity and a biotin subunit for affinity chromatography and chemiluminescent detection. Probes (1 and 2) showed leaf-opening activity at 5Γ—10 -5 mol/L with leaves of C. mimosoides; thus, they would be an important tool for the identification of a receptor protein for 3.

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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