| Literature DB >> 19428248 |
Oliver E Hutt1, Jun Inagaki, Bollu S Reddy, Sajiv K Nair, Emily A Reiff, John T Henri, Jack F Greiner, David G VanderVelde, Ting-Lan Chiu, Elizabeth A Amin, Richard H Himes, Gunda I Georg.
Abstract
The total synthesis of 22-(3-azidobenzoyloxy)methyl epothilone C is described as a potential photoaffinity probe to elucidate the beta-tubulin binding site. A sequential Suzuki-aldol-Yamaguchi macrolactonization strategy was utilized employing a novel derivatized C1-C6 fragment. The C22-functionalized analog exhibited good activity in microtubule assembly assays, but cytotoxicity was significantly reduced. Molecular modeling simulations indicated that excessive steric bulk in the C22 position is accommodated by the large hydrophobic pocket of the binding site. Photoaffinity labeling studies were inconclusive suggesting non-specific labeling.Entities:
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Year: 2009 PMID： 19428248 PMCID： PMC2803616 DOI： 10.1016/j.bmcl.2009.04.077
Source DB: PubMed Journal: Bioorg Med Chem Lett ISSN： 0960-894X Impact factor: 2.823