four known flavonoids: quercetin 3-o-β-d-rutinoside (q3rut), myricetin 3-o-β-d-galactopyranoside (m3gal), quercetin 3-o-β-d-galactopyranoside (q3gal) and quercetin 3-o-β-d-glucopyranoside (q3glc), for the first time were isolated from aerial parts of euphorbia microsciadia. the chemical structure of them was elucidated on the basis of 1 and 2 d-nmr spectra and different spectroscopic techniques...

introduction the compounds known as β-adrenergic agonists (β-aa) are organic molecules that have the ability to bind to β-adrenergic receptors (β-ar) and start biochemical reactions that will result in increase of accretion of skeletal muscle and reduction in accretion of fat. the anabolic responses to β-aa are temporary, with a peak time occurring during the first 14 days, after which there is...

Plants belonging to the Weigela genus are traditionally used flourish gardens, homes, and other living areas. This contains ten species that mainly found in Asia, but many cultivars have been cultivated around world. Previous studies on some of this revealed occurrence triterpenoid saponins, which possess interesting biological activities such as cytotoxicity, anti-complementary activity, anti-...

Two new spirostane glycosides, named polygokingiaside A (1) and B (2), 6 known (25 R)-26- O-( β-d-glucopyranosyl)-furost-5-en-3 β,22 α,26-triol 3- O-β-d-glucopyranosyl-(1→4)- β-d-galactopyranoside (3), S)-26- O-β-d-glucopyranosyl-(1→2)- β-d-glucopyranosyl-(1→4)- (4), (5), (23 S,25 R)-spirostan-5-en-3 β,23-dihydroxy-12-one-3- (6), (24 β,24-dihydroxy-12-one-3- (7), β-hydroxy-12-one-3- (8), were i...

Chemical analysis of the aqueous and n-butanol fractions methanolic extract Stipagrostis plumosa Munro ex T.Anderson, Poaceae, aerial parts led to isolation seven known phenolic glycosides 3,4′-dihydroxypropiophenone-3-O-β-d-glucoside, 5′-methoxy-3,4′-dihydroxypropiophenone-3-O-β-d-glucoside, 3′5′-dimethoxy-3,4′-dihydroxypropiophenone-3-O-β-d-glucoside, 3,4,5-trimethoxyphenyl-β-d-glucopyranose,...

A new flavonoid, acacetin-7-O-β-D-glucopyranosyl-(1 → 2)-β-D-glucuronopyranoside (1), together with four known flavonoids, apigenin-7-O-β-D-glucopyranosyl-(1 (2), acacetin (3), acacetin-7-O-β-D-glucuronide (4) and genkwanin-5-O-primveroside (5) were isolated from the leaves of Glyphaea brevis. Their structures elucidated by spectroscopic techniques. The compounds (1 - 5) tested for their antiox...