منابع مشابه
Gram-scale synthesis of iejimalide B.
Iejimalide B (2) is the most promising member of a small family of marine polyene macrolides endowed with remarkably selective activity against human cancer cell lines. As this product, however, is hardly available from the natural sources, a detailed evaluation requires the development of an efficient and practical synthetic approach. This challenge has now been met by adapting the first total...
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Total synthesis of the cyanobacterial metabolite largamide B and the disproval of its originally assigned stereochemistry as well as confirmation of the revised stereochemistry are reported.
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Starting from the glucose-derived δ-lactone and the functionalized aryl bromide, the first total synthesis of naturally occurring paecilomycin B was achieved via functionalized aryl-β-C-glycoside synthesis using 2,4,6-triisopropylphenyllithium under Barbier-type reaction conditions and ring-closing metathesis as the key steps.
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(+/-)-Neovibsanin B was synthesized based on a DMI-accelerated intramolecular Diels-Alder reaction followed by oxy-Michael addition-lactonization. The synthetic (+/-)-neovibsanin B induced similar morphological changes in NGF-mediated PC12 cells compared with natural (+)-neovibsanin B.
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The first total synthesis of propolisbenzofuran B, a bioactive natural product isolated from honeybee propolis resin, is reported. The convergent synthesis makes use of a silicon-tether controlled oxidative ketone-ketone cross-coupling and a novel benzofuran-generating cascade reaction to deliver the core structure of the natural product from readily prepared precursors.
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ژورنال
عنوان ژورنال: The Journal of Organic Chemistry
سال: 2011
ISSN: 0022-3263,1520-6904
DOI: 10.1021/jo200514m