SAR analysis revealed that the anti-proliferative activity of the xanthones is substantially influenced by the position and number of attached hydroxyl and prenyl groups, and the presence of hydroxyl group ortho to the carbonyl function of xanthone scaffold contributes significantly to their cytotoxicity. The new prenylatedxanthone 20 with a relatively simple structure, namely 1,3,8-trihydroxy-2-prenylxanthone
Synthesis of 1,3,6-Trioxygenated Prenylated Xanthone Derivatives as Potential Antitumor Agents
作者:Chan K. Lim、Lai-Yeng Tho、Yang M. Lim、Syed A. A. Shah、Jean-Frederic F. Weber
DOI:10.2174/157017812802850230
日期:2012.9.1
To investigate the antitumor activities of xanthonic compounds, 10 prenylated xanthone derivatives 2-11 along
with their key building block 1,3,6-trihydroxyxanthone 1 were evaluated for their potential cytotoxic activities against
HeLa and MDA-MB-231 cancer cell lines. The synthesis afforded a series of prenylated derivatives with typical and new
xanthone skeletons. Compounds 2, 3, 4 and 9 were reported for the first time to possess a new scaffold of 2H-xanthene-
3,9-dione. Interestingly, analogues 2 and 3 with the new scaffold demonstrated remarkable in vitro growth inhibitory
activities against both the cell lines by displaying a greater cytotoxic potency than the standard drugs used in the assay,
namely doxorubicin and cisplatin. In contrast, a dramatic loss of activity was observed for the O-prenylated derivatives 9-
11. These findings have highlighted the therapeutic potential of 2H-xanthene-3,9-dione scaffold to be exploitable as drug
lead with specific activity against cervical and breast cancers.
Design and synthesis of gambogic acid analogs as potent cytotoxic and anti-inflammatory agents
作者:Chiao-Ting Yen、Kyoko Nakagawa-Goto、Tsong-Long Hwang、Susan L. Morris-Natschke、Kenneth F. Bastow、Yang-Chang Wu、Kuo-Hsiung Lee
DOI:10.1016/j.bmcl.2012.04.084
日期:2012.6
Prenyl-and pyrano-xanthones derived from 1,3,6-trihydroxy-9H-xanthen-9-one, a basic backbone of gambogic acid (GA), were synthesized and evaluated for in vitro cytotoxic effects against four human cancer cell lines (KB, KBvin, A549, and DU-145) and anti-inflammatory activity toward superoxide anion generation and elastase release by human neutrophils in response to fMLP/CB. Among them, prenylxanthones 7-13 were generally less active than pyranoxanthones 14-21 in both anticancer and anti-inflammatory assays. Furthermore, two angular 3,3-dimethypyranoxanthones (16 and 20) showed the greatest and selective activity against the KBvin multidrug resistant (MDR) cell line with IC50 values of 0.9 and 0.8 mu g/mL, respectively. An angular 3-methyl-3-prenylpyranoxanthone (17) selectively inhibited elastase release with 200 times more potency than phenylmethylsulfonyl fluoride (PMSF), the positive control. (C) 2012 Elsevier Ltd. All rights reserved.
The structures of garcinones a, b and c: Three new xanthones from Garcinia mangostana
作者:Ashis K. Sen、Kalyan K. Sarkar、Pronobesh C. Mazumder、Nilima Banerji、Raimo Uusvuori、Tapio A. Hase
DOI:10.1016/s0031-9422(82)85052-8
日期:1982.1
Sen, A. K.; Sarkar, K. K.; Majumder, P. C., Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1980, vol. 19, # 11, p. 1008
作者:Sen, A. K.、Sarkar, K. K.、Majumder, P. C.、Banerji, N.