Syntheses and novel bioactivities of artificial leaf-opening substances of Lespedeza cuneata G. Don, designed for the bioorganic studies of nyctinasty

Minoru Ueda, Yoshiyuki Sawai, Shosuke Yamamura

研究成果: Article査読

20 被引用数 (Scopus)

抄録

Potassium lespedezate (1) is the leaf-opening substance of a nyctinastic 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 Cassia. mimosoides at 8 x 10-7 M, as strong as 1. However, 1 kept the leaf open only for a few days; on the other hand, 4 and 6 kept the leaf open after a week at that concentration. Additionally, remarkable difference was observed in the rate of enzymatic hydrolysis of natural and artificial leaf-opening sustance by using commercially available β-glucosidase. Therefore, 4 and 6 would not be hydrolized in the plant body, and are potentially useful molecular probes for the studies of the control of the nyctinastic leaf-movement by a biological clock.

本文言語English
ページ(範囲)10925-10936
ページ数12
ジャーナルTetrahedron
55
36
DOI
出版ステータスPublished - 1999 9月 3
外部発表はい

ASJC Scopus subject areas

  • 生化学
  • 創薬
  • 有機化学

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