Aurone from Astragalus microcephalus stems

摘要

In continuation of studies of phenolic compounds from plants of the genus Astragalus [1], we studied vegetative organs from A. microcephalus for the presence of their derivatives. It was found that the aerial part of this plant was rich in flavonoids; stems and roots, saponins. The flavonoid spectrum of leaves and flowers differed slightly. Leaves, flowers, and stems contained a compound with Rf 0.45 (n-BuOH:CH3CO2H:H2O, 4:1:2) that did not give the color characteristic of flavones and flavonols on spraying with methanolic base (10%).