METHOD FOR THE EXTRACTION OF PHARMACEUTICALLY ACTIVE PRODUCTS FROM SPERMATOPHYTE PLANTS, PRODUCTS THUS OBTAINED AND THEIR USE IN THE MEDICAL FIELD, IN PARTICULAR AS SUBSTANCES WITH IMMUNOMODULATING ACTIVITY
申请人:Ravagnan Giampietro
公开号:US20080070851A1
公开(公告)日:2008-03-20
A method is described for the extraction of products having a pharmacological activity, in particular an immunomodulating activity, from spermatophyte plants. Said products, which are to be used in the pharmaceutical fields, consist of complex mixtures of compounds characterized by one or more stilbene groups, variously hydroxylated and/or glucosidated, and of compounds derived from said group by natural enzymatic biosynthetical processes (stilbenoids). The following compounds are preferred: T-Res, C-Res, glucosidated C-Res, ε-viniferine, H-gnetine, r-2-viniferine, r-viniferine, hopeaphenol, Ampelopepsin A and glucosidated T-Res.
Resveratrol Oligomers from <i>Vatica albiramis</i>
Five new stilbenoids, vatalbinosides A−E (1−5), and 13 known compounds (6−18) were isolated from the stem of Vatica albiramis. The effects of these new compounds on interleukin-1β-induced production of matrix metalloproteinase-1 (MMP-1) in human dermal fibroblasts were examined. Three resveratrol tetramers, (−)-hopeaphenol (6), vaticanol C (13), and stenophyllol C (14), were identified as strong inhibitors
Absolute Configuration of Resveratrol Oligomers Isolated from<i>Hopea utilis</i>
作者:Tetsuro Ito、Ryosuke Hoshino、Munekazu Iinuma
DOI:10.1002/hlca.201400146
日期:2015.1
a stem of Hopea utilis (Dipterocarpaceae) resulted in the isolation of two new resveratrol derivatives, namely hopeaside E (1; resveratrol trimer) and hopeaside F (2; resveratrol pentamer), together with ten known resveratrol derivatives, 3–12. The structures of the new compounds were elucidated by spectroscopic analyses, including NMR experiments, and their absoluteconfigurations were determined