Most of the species chemically investigated were reported to contain flavanones, prenylated isoflavones, isoflavanones and pterocarpans. (scialert.net)
In the described study, 3 the supplement was found to comprise 35.54% isoflavones, 1.11% flavonoids, 0.06% pterocarpans, "0.03% coumarins and" 0.03% tyramine. (skininc.com)
Isoflavonoids including isoflavones, isoflavanes and pterocarpans (the principal components in Astragalus) have a great deal of versatile health-promoting benefits. (biotanicahealth.com)
Isoflavonoids1
Pterocarpans are derivatives of isoflavonoids found in the family Fabaceae. (wikipedia.org)
11aR3
From the CH2Cl2/CH3OH (1:1) extract of the root bark of Millettia micans, a new pterocarpan, (6aR,11aR)-7,8,9-trimethoxy-3-hydroxypterocarpan (1), named micanspterocarpan, was isolated. (ac.ke)
A new isoflavone, 4'-prenyloxyvigvexin A (1) and a new pterocarpan, (6aR,11aR)-3,8-dimethoxybitucarpin B (2) were isolated from the leaves of Lonchocarpus bussei and the stem bark of Lonchocarpus eriocalyx, respectively. (ac.ke)
The first enantioselective synthesis of trans-6aS,11aR-pterocarpan and its conversion to cis-6aS,11aS-ptarocarpan was also presented starting from racemic 2ยท-benzyloxyflavanone. (unideb.hu)
Derivatives2
On the basis of these observations, the published absolute configurations of natural flavonol and pterocarpan derivatives were confirmed and the configurational assignments of several natural neolignans revised. (unideb.hu)
The CD study of (+)-1 and (+)-2 allows the configurational assignment of similar pterocarpan derivatives by CD spectroscopy. (unideb.hu)
Isolation1
Examination of bioactive mother-liquors from previous large scale experiments on the antimicrobial agents from the Nigerian medicinal plant, Erythrira mildbraedii , led to the isolation and structural characterization of two new pterocarpans, erybraedin D and E. Erybraedin D was initially isolated as its apparently artifactual hemiethyl phthalate ester. (heterocycles.jp)
Synthesis1
Although practical asymmetric Heck oxyarylation to chiral pterocarpans could not be achieved, a convenient Heck-oxyarylation synthesis of rac-15 with (+)-alpha-pinene as ligand gave the highest yield reported to this type of reactions. (unideb.hu)