Taxonomic group: plant / Streptophyta
(Phylum: Streptophyta)
NCBI PubMed ID: 9214739Publication DOI: 10.1021/np970025kJournal NLM ID: 7906882Publisher: American Society of Pharmacognosy
Institutions: Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
Several plants collected through different approaches were screened on distinct receptors using ligand-binding studies as bioassay. Extracts of Microtea debilis showed high activity on adenosine A(1) receptors. Bioassay-guided fractionation using ligand-binding studies resulted in the isolation of an adenosine A(1) active ligand, cirsimarin (cirsimaritin 4'-O-glucoside). GTP did not influence the radioligand inhibition curve of cirsimarin, indicating that this compound is acting as an antagonist at the adenosine-A(1) receptors. The use of this plant against ''proteinuria'' in traditional medicine in Suriname (South America) may be explained by the adenosine A(1) antagonistic action of cirsimarin. A series of flavonoids was tested in the same assay, but they were less active. No structure-activity relationship could be observed.
Structure type: monomer
C
21H
20O
11Location inside paper: p.640, table 2, quercitrin (6)
Trivial name: quercitrin, baohuoside-II, quercetin 3-rhamnoside, quercetin 3-O-rhamnoside
Compound class: saponin glycoside, glycoside, flavonoid glycoside, flavonol glycoside
Contained glycoepitopes: IEDB_136105,IEDB_225177,IEDB_885823
Methods: 13C NMR, 1H NMR, FAB-MS, TLC, acid hydrolysis, biological assays, UV, extraction
Biological activity: the interaction of cirsimarin with adenosine A1 receptors
Related record ID(s): 60254, 60255, 60257, 60258
NCBI Taxonomy refs (TaxIDs): 696524Reference(s) to other database(s): CCSD:
49971, CBank-STR:599
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
report error