Relevance of the C-5 position to schweinfurthin induced cytotoxicity
摘要:
The schweinfurthins are an intriguing group of anti-proliferative agents that display low nanomolar activities against several cell types, including the human-derived glioblastoma cell line SF-295, but have little impact on other cell lines even at micromolar concentrations. This activity has inspired the synthesis of seven of the natural schweinfurthins, all with the correct absolute stereochemistry, and a variety of analogues designed to probe different facets of the pharmacophore. Reported herein is the synthesis of several new schweinfurthin analogues varied at the C-5 position along with data on their biological activity in the NCI 60 cell-line assay. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] SCHWEINFURTHIN ANALOGUES<br/>[FR] ANALOGUES DE LA SCHWEINFURTHINE
申请人:UNIV IOWA RES FOUND
公开号:WO2009158516A1
公开(公告)日:2009-12-30
The invention provides fluorescent schweinfurthin analogs of formula(I) which are useful as probes and for the treatment of cancer and other diseases.
该发明提供了公式(I)的荧光施文富尔汀类似物,可用作探针,用于治疗癌症和其他疾病。
Total synthesis of (R,R,R)- and (S,S,S)-schweinfurthin F: Differences of bioactivity in the enantiomeric series
作者:Nolan R. Mente、Andrew J. Wiemer、Jeffrey D. Neighbors、John A. Beutler、Raymond J. Hohl、David F. Wiemer
DOI:10.1016/j.bmcl.2006.11.096
日期:2007.2
Totalsynthesis of the (R,R,R)- and (S,S,S)-enantiomers of the natural product schweinfurthin F has been completed. Comparisons of spectral data and optical rotations with those reported for the natural product, as well as a variety of bioassay data, allow assignment of the natural material as the (R,R,R)-isomer.
Fluorescent schweinfurthin B and F analogs with anti-proliferative activity
作者:Joseph J. Topczewski、Craig H. Kuder、Jeffrey D. Neighbors、Raymond J. Hohl、David F. Wiemer
DOI:10.1016/j.bmc.2010.07.056
日期:2010.9
The natural tetracyclic schweinfurthins are potent and selective inhibitors of cell growth in the National Cancer Institute's 60 cell-line screen. At this time, the mechanism or cellular target that underlies this activity has not yet been identified, and efforts to illuminate the schweinfurthins' mode of action would benefit from development of potent fluorescent analogs that could be readily visualized within cells. This report describes the synthesis of fluorescent analogs of schweinfurthins B and F, and demonstrates that these compounds retain the potent and differentially toxic activities against select human cancer cells that are characteristic of the natural schweinfurthins. In addition, the synthesis of control compounds that maintain parallel fluorescent properties, but lack the potent activity of the natural schweinfurthin is described. Use of fluorescence microscopy shows differences between the localization of the active and relatively inactive schweinfurthin analogs. The active compounds localize in peripheral puncta which may identify the site(s) of activity. (c) 2010 Elsevier Ltd. All rights reserved.
Biologically active biotin derivatives of schweinfurthin F
作者:Natalie C. Ulrich、Craig H. Kuder、Raymond J. Hohl、David F. Wiemer
DOI:10.1016/j.bmcl.2010.08.143
日期:2010.11
As a prelude to efforts to identify schweinfurthin binding proteins, an ester conjugate and an amide conjugate of schweinfurthin F and biotin have been prepared by chemical synthesis. These compounds maintain activity in SF-295 cells comparable to the parent system, and display the lower potency in A549 cells that is a characteristic of the schweinfurthin pattern of activity. (C) 2010 Elsevier Ltd. All rights reserved.