Chemical Constituents of Stems of Astragalus falcatus Growing in Georgia.

Compound B 3 b formed white needle-like crystals that were soluble in EtOH. Compound B 5 b formed orange crystals that were soluble in EtOH, EtOH (70%), and Me SB 2 sb CO and insoluble in H SB 2 sb O. UV, SP 1 sp H NMR and SP 13 sp C NMR spectral data were identical to those of sulfuretin, which was previously isolated from I A. microcephalus i Wild. Compound B 4 b formed white needle-like crystals with mp 129°C that were soluble in EtOH, MeOH, CHCl SB 3 sb , and C SB 6 sb H SB 6 sb ; I R i SB I f i sb 0.61 (CHCl SB 3 sb -MeOH, 10:1). [Extracted from the article]