223930-90-3

Upstream product

• 3068-32-4 1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside 
• 223930-88-9 methyl 2-(2',3',4',6'-tetra-O-acetyl-β-D-galactopyranosyloxy)-3-p-t-butyldimethylsilyloxyphenylpropionate 
• 223930-86-7 methyl 2-(2',3',4',6'-tetra-O-acetyl-β-D-galactopyranosyloxy)-3-p-benzyloxyphenyl-propionate 
• 223930-87-8 methyl 2-(2',3',4',6'-tetra-O-acetyl-β-D-galactopyranosyloxy)-3-p-hydroxyphenyl-propionate 
• 128316-64-3 (+/-)-methyl 3-p-benzyloxyphenyl-2-hydroxypropionate 
• 223930-89-0 (Z)-3-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-2-((2S,3R,4S,5S,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-acrylic acid methyl ester 

Relevant academic research and scientific papers

The biological significance of leaf-movement, an approach using a synthetic inhibitor of leaf-closure

Nyctinastic leaf-movement, which is folding and opening movement of the leaves according to circadian rhythm, have been widely observed in leguminous plants. Although this movement has been known since the age of Alexander the Great, the question 'Why doe

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

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.