Flavonoids of Tephrosia purpurea

Two New Flavonoids from Derris eriocarpa How

“…The presence of a –OCH 2 O– unit was deduced from the signals at δ (H) 6.01 ( d , J = 13.1) and δ (C) 102.5. All the above information indicated that the structure of compound 2 was similar to that of tephrosin ( 3 ) (Table) , which was further confirmed by the 1 H, 1 H‐COSY, HMQC, and HMBC spectra ( Fig. ).…”

A new approach to study medicinal plants with tannins and flavonoids contents from the local knowledge

“…(Fabaceae), an herb whose aerial portion has been shown to demonstrate anti-hyperglycemic, anti-lipidic peroxidase (Pavana et al, 2007), antioxidant (Soni et al, 2006) and immunomodulating activity (Damre et al, 2003). New flavonoids, including tephrosin, pongaglabol and semiglabrin have been discovered in this species (Ahmad et al, 1999). The species with the second largest flavonoid content was Psidium guajava L., and it demonstrated efficiency in treating the symptoms of diarrhea (Lozoya et al, 2002)-an effect associated with the flavonoid quercetin (Morales et al, 1994;Lozoya et al, 1994).…”

Rotenoids from Tephrosia toxicaria with larvicidal activity against Aedes aegypti, the main vector of dengue fever

“…14 The structures of all compounds were established by 1D 1 H and 13 C ({ 1 H} and DEPT) and 2D 1 H-1 H-COSY, HSQC and HMBC NMR spectral data and by comparing their spectroscopy data with that reported in the literature. The configuration of the B/C-ring junction of all the rotenoids was established by 1 H NMR spectroscopic analysis, where the chemical shift value at δ 6.6-6.8 for H-1 confirmed the cis-fused B/C-ring system.…”