A New Glycoside of Resveratrol Dimer from Stem Bark of Vitis vinifera

Asymmetric Synthesis of (+)- and (−)-Pauciflorol F: Confirmation of Absolute Stereochemistry

“…At this stage it is not yet known if 7 also switches its absolute stereochemistry in different plant families, as it has only been isolated from Cissus quadrangularis L. (Vitaceae) as the (−)-enantiomer . Nonetheless, its presence in other plant families can be deduced from the isolation biosynthetic products, such as 8 and (+)- 9 from Caragana sinica (Leguminosae). ,, While 8 has been isolated from both Vitaceae and Leguminosae, it cannot be used to inform on changes in absolute stereochemistry of 7 , as it has no optical rotation and 9 has only been isolated from Leguminosae. Since Caragana sinica also yielded (−)- 6 we can deduce that (+)- 3 is present in this plant (as expected for Leguminosae) and that (+)- 5 has the depicted RSR -stereochemistry (not previously assigned).…”

Dipterostilbenosides A and B, Oligostilbene Glycosides from Dipterocarpus tuberculatus

“…The appearance of the glucopyranosyl group was confirmed by TLC analysis of the acid hydrolysis products of 2. We found that compound 2 was a diastereomer of (-)-ε-viniferin glycoside, which was reported from the stem bark of Vitis vinifera [8].…”

Production of high molecular-ordered stilbene oligomers for the study of their biological activity: total synthesis, bio-catalyzed synthesis and production by plant systems

“…Stilbene oligomers indeed display activities which are of the order of a few micromoles compared to those of resveratrol which exhibits values greater than 20 μM. High molecular-ordered resveratrol oligomers show cytotoxic, antiproliferative, antimetastatic, 21–26 antiarthritic, 27 antidiabetic activities 28 as well as being able to inhibit a number of enzymes such as the inducible nitric oxide synthase (iNOS) linked to autoimmune and inflammatory processes, 29,30 acetylcholinesterase (AChE), a target for Alzheimer's disease treatment 31 and HIV-1 integrase and eukaryotic MOS1 transposase necessary for retroviruses of the HIV-1 type. 32…”