4599-58-0Relevant academic research and scientific papers
A new antiviral flavone glycoside from vernonia cinerea less
Yadava,Raj, Mamta
, p. 3542 - 3544 (2013/05/08)
A new flavone glycoside (A) m.p. 258-260 °C, m.f. C33H 40O19, [M] 740 (FABMS), has been isolated from roots of Vernonia cinerea Less. It was characterized as 5,7,4'-trihydroxy 3'-methoxy flavone-4'-O-a-L-rhamnopyranosyl-(14)-O-a-L-arabino-pyranosyl-(1 3)-O-b- D-galactopyranoside by various chemical degradations and spectral analysis which showed antiviral activity alongwith two known compounds luteolin (B) and taxifolin (C).
TOMATOSIDE A FROM THE SEEDS OF Lycopersicum esculentum
Shchelochkova, A. P.,Vollerner, Yu. S.,Koshoev, K. K.
, p. 386 - 392 (2007/10/02)
Results are given which confirm the structure of the furostanol glycoside from tomato seeds forming wastes of the preserving industry.From a butanolic extract of the seeds of Lycopersicum esculentum Mill. we have isolated the furostanol glycoside tomatoside A (I) the structure of which has been established as 25(S)-5α-furostan-3β,22α,26-triol 26-O-β-D-glucopyranoside 3-O2)-O-β-D-glucopyranosyl-(1->4)-β-D-galactopyranoside>.At the same time, by enzymatic and chemical transformations three new spirostanol glycosides of neotigogenin have been obtained: tomatoside B (III), which is 25(S)-5α-spirostan-3β-ol 3-O-2)-β-D-galactopyranoside>, 25(S)-5α-spirostan-3β-ol 3-O-4)-β-D-galactopyranoside> (V), and 25(S)-5α-spirostan-3β-ol 3-O-β-D-galactopyranoside (IV).
