83088-26-0Relevant articles and documents
Nickel(II)-Catalyzed Borylation of Alkenyl Methyl Ethers via C-O Bond Cleavage
Qiu, Xiaodong,Li, Yangyang,Zhou, Li,Chen, Peishan,Li, Fan,Zhang, Yanan,Ling, Yong
, p. 6424 - 6428 (2020/08/24)
A new protocol has been developed for the borylation of conjugated alkenyl methyl ethers using B2Pin2 via C-O bond cleavage catalyzed by Ni(II). In this cross-coupling reaction, both E/Z isomers of alkenyl ethers are converted into (E)-alkenyl boronic esters with good reactivity. This transformation exhibits high chemoselectivity in the presence of competitive C-O bonds such as aryl ether, ester, amide, and thioether groups, thus providing a new method for the construction of various alkenyl boronates.
Resveratrol-Related Polymethoxystilbene Glycosides: Synthesis, Antiproliferative Activity, and Glycosidase Inhibition
Cardullo, Nunzio,Spatafora, Carmela,Musso, Nicolò,Barresi, Vincenza,Condorelli, Daniele,Tringali, Corrado
, p. 2675 - 2683 (2015/12/09)
A small library of polymethoxystilbene glycosides (20-25) related to the natural polyphenol resveratrol have been synthesized and subjected, together with their aglycones 17-19, to an antiproliferative activity bioassay toward Caco-2 and SH-SY5Y cancer cells. Six of the compounds exhibit antiproliferative activity against at least one cell line. In particular, compounds 17 and 18 proved highly active on at least one of the two cell cultures. Compound 18 showed a GI50 value of 3 ΜM against Caco-2 cells, a value comparable to that of the anticancer drug 5-fluorouracil. The closely related compound 19 proved inactive, and its conjugates 22 and 25 showed weak cell growth inhibition. The results indicate that minimal differences in the structure of both polymethoxystilbenes and their glycosides can substantially affect the antiproliferative activity. The possible hydrolytic release of the aglycones 17-19 by β-glucosidase or β-galactosidase was also evaluated. Compounds 20-25 were also tested as potential β-glucosidase, β-galactosidase, and α-glucosidase inhibitors. A promising inhibitory activity toward α-glucosidase was observed for 21 (IC50 = 78 ΜM) and 25 (IC50 = 70 ΜM), which might be indicative of their potential as lead compounds for development of antidiabetic or antiobesity agents.
NOVEL PROCESS FOR THE SYNTHESIS OF (E)-STILBENE DERIVATIVES WHICH MAKES IT POSSIBLE TO OBTAIN RESVERATROL AND PICEATANNOL
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Page/Page column 30-31, (2008/06/13)
A subject-matter of the present invention is a novel process for the synthesis of (E)- stilbene derivatives targeted at obtaining in particular resveratrol and piceatannol.
