Document Detail

Novel Silicon-Containing Analogues of the Retinoid Agonist Bexarotene: Syntheses and Biological Effects on Human Pluripotent Stem Cells.
MedLine Citation:
PMID:  21726055     Owner:  NLM     Status:  Publisher    
Twofold sila-substitution (C/Si exchange) of the clinically used RXR-selective retinoid agonist bexarotene leads to disila-bexarotene, which displays pharmacological potency similar to that of the parent carbon compound, as shown in a HeLa-cell-based RXR assay. Formal exchange of the SiCH(2) CH(2) Si group in disila-bexarotene with a SiCH(2) Si or SiOSi moiety leads to the disila-bexarotene analogues 8 and 9. The silicon compounds 8 and 9 were synthesized in multistep syntheses, starting from HCC(CH(3) )(2) SiCH(2) Si(CH(3) )(2) CCH and HCC(CH(3) )(2) SiOSi(CH(3) )(2) CCH, respectively. The key step in the syntheses of 8 and 9 is a cobalt-catalyzed [2+2+2] cycloaddition reaction that affords the 1,3-disilaindane and 2-oxa-1,3-disilaindane skeletons. Disila-bexarotene and its analogues 8 and 9 were studied for their biological effects relative to all-trans retinoic acid in cultured human pluripotent stem cells. The parent carbon compound bexarotene was included in some of these biological studies. Although the silicon-containing bexarotene analogues disila-bexarotene, 8, and 9 appear not to regulate the differentiation of stem cells, preliminary evidence indicates that these compounds may possess enhanced functions over the parent compound bexarotene, such as induction and regulation of cell death and cell numbers. The biological data obtained indicate that bexarotene, contrary to the silicon-containing analogues disila-bexarotene, 8, and 9, may partially act to induce cell differentiation.
Jennifer B Bauer; W Peter Lippert; Steffen Dörrich; David Tebbe; Christian Burschka; Victoria B Christie; Daniel M Tams; Andrew P Henderson; Bridgid A Murray; Todd B Marder; Stefan A Przyborski; Reinhold Tacke
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-1
Journal Detail:
Title:  ChemMedChem     Volume:  -     ISSN:  1860-7187     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101259013     Medline TA:  ChemMedChem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84609.
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