Context: Polyphenols are naturally occurring compounds found in fruits, vegetables, cereals,
and beverages. Polyphenols occupy a unique place in biological science for their …

Giosgenin is a naturally steroidal saponin exhibiting a variety of biological activities
including antitumor ones. A series of novel diosgenyl quaternary ammonium derivatives …

Five megastigmane glucosides were isolated from the leaves of Glochidion zeylanicum. One
of them was a known compound, blumenol C ObD-glucopyranoside (1), and the structures …

Quezia B. Cass and Regina. V. Oliveira, SEPARATION OF MULTI-MILLIGRAM QUANTITIES
OF GOSSYPOL ENANTIOMERS ON POLYSACCHARIDE-BASED STATIONARY PHASES …

A novel chemical process has been devised for the synthesis of a new derivative of
gossypol, 6, 7, 6′, 7′‐tetrahydroxy‐5, 5′‐diisopropyl‐3, 3′‐dimethyl‐[2, 2'] …

Two new norbisabolane sesquiterpenoid glycosides, glochicoccinosides A (1) and B (2),
together with two known compounds, have been isolated from the rhizomes of Glochidion …

Both the sugar moieties and aglycons of steroid saponins play important roles for their
bioactivities. In order to test the biological contribution of the glycosyl residue and search …

Four new saponins, gycomoside I-IV, were isolated from the aerial part of Gynostemma
compressum XX Chen et DR Liang. The structures were elucidated on the basis of spectral …

Six novel rearranged cholestane glycosides with a six-membered hemiacetal ring system,
designated as saundersiosides C–H, were isolated from the bulbs of Ornithogalum …

Gynostemma pentaphyllum is a functional food that is commercially available worldwide.
Triterpenoid saponins are the main active components in Gynostemma pentaphyllum, which …