Synthesis and Biological Evaluation of a Natural Ester Sintenin and Its Synthetic Analogues
摘要:
Synthesis of 3-(3,4-dimethoxyphenyl)propyl-3-(3,4-dimethoxyphenyl) propanoate (18), a cytotoxic natural ester, was carried out by a convenient synthetic path with a total yield of 49%. Sixteen of its analogues (19-34) were also prepared. Seventeen unsaturated derivatives of 18, compounds 1-17, were also synthesized to examine the structure-activity relationship of this type of ester. All of the synthetic compounds were passed through the cytotoxicity screenings on human tumor cell lines, such as PC-3, Hela, A549, BEL7404, CNE, and KB. Some of the esters exhibited moderate inhibitory effects on these tumor cell lines. The phenolic derivatives exhibited the highest cytotoxicity among these derivatives, while the unsaturated esters were more cytotoxic than the saturated analogues. Some of the compounds also exhibited inhibition on a-glucosidase.
Caffeic acid phenethyl ester (CAPE) is a bioactive component isolated from propolis. A series of CAPE analogues was synthesized and their antiradical/antioxidant effects analyzed. The effect of the presence of the double bond and of the conjugated system on the antioxidant effect is evaluated with the analogues obtained from 3-(3,4-dihydroxyphenyl) propanoic acid. Those obtained from 2-(3,4-dihydroxyphenyl)
Ten esters each of caffeic acid and dihydrocaffeicacid have recently been synthesized. Cytotoxicity evaluations of these esters versus L1210 leukemia and MCF-7 breast cancer cells in culture have led to the delineation of substantially different QSAR for each series. The L1210 QSAR for dihydrocaffeicacidesters resembles the QSAR obtained for simple phenols and estrogenic phenols. However, the QSAR
MODULATORS OF LIPOXYGENASE AND CYCLOOXYGENASE ENZYME ACTIVITY
申请人:Universite de Moncton
公开号:US20190119194A1
公开(公告)日:2019-04-25
The present invention relates to modulators of lipoxygenase and/or cyclooxygenase enzyme. The present invention also provides compositions comprising such modulators, and methods therewith for treating lipoxygenase receptor mediated diseases.