Abstract
Potassium lespedezate (1) is the leaf-opening substance of a nyctinastic plant, Lespedeza cuneata G. Don. We synthesized two sugar-derivatives of 1, potassium galactolespedezate (2) and mannoisolespedezate (3). Both 2 and 3 were quite effective for the leaf-opening of L. cuneata, at 8 x 10-7 M, as strong as 1. However, 1 kept the leaf open only for a few days; on the other band, 2 and 3 kept the leaf open after a week at that concentration. Thus, it is assumed that 2 and 3 could not be hydrolyzed by α-glucosidase in the plant body, and are therefore potentially useful molecular probes for the studies of the control of the nyctinastic leaf-movement by a biological clock.
Original language | English |
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Pages (from-to) | 3757-3760 |
Number of pages | 4 |
Journal | Tetrahedron Letters |
Volume | 40 |
Issue number | 19 |
DOIs | |
Publication status | Published - 1999 May 7 |
Externally published | Yes |
Keywords
- Biologically active compounds
- Glycosidation
- Glycoside
- Natural products
- Plants
ASJC Scopus subject areas
- Biochemistry
- Drug Discovery
- Organic Chemistry