Highly Efficient Nickel-Catalyzed Cross-Coupling of Succinic and Glutaric Anhydrides with Organozinc Reagents
作者:Eric A. Bercot、Tomislav Rovis
DOI:10.1021/ja044588b
日期:2005.1.1
introduction of molecular complexity through the use of functionalized coupling partners. Regioselective alkylation of an unsymmetrical succinic anhydride and a profound effect of pendent coordinating olefins on reaction rate suggest a mechanism involving discrete oxidative addition of the nickel complex into the cyclicanhydride followed by a transmetalation event.
Kirmse-Doyle- and Stevens-Type Rearrangements of Glutarate-Derived Oxonium Ylides
作者:Benedikt Skrobo、Nils E. Schlörer、Jörg-M. Neudörfl、Jan Deska
DOI:10.1002/chem.201704624
日期:2018.3.2
tetrahydrofuran building blocks. Here, the lipase‐catalyzed desymmetrization of 3‐alkoxyglutarates renders highly enantioenriched carboxylic acid intermediates, whose subsequent activation and oxonium yliderearrangement by means of rhodium or copper complexes furnishes functionalized O‐heterocycles with excellent diastereoselectivity. The two‐step protocol offers a streamlined and flexible synthesis of tetrahydrofuranones
An efficient reduction followed by cyclization of diacid compounds with the InBr3/TMDS system is reported. This system allows the formation of five- and six-membered ring ethers substituted in the 3- or 4-position.
Oxonium Ylide Rearrangement of Enzymatically Desymmetrized Glutarates
作者:Benedikt Skrobo、Jan Deska
DOI:10.1021/ol402887z
日期:2013.12.6
The combination of an enzyme-mediated enantioselective desymmetrization of readily available 3-benzyloxyglutarates and subsequent rhodium-catalyzed oxoniumyliderearrangement of their corresponding in situ derived diazo ketones offers a very concise and highly stereoselective access to functionalized tetrahydrofuranone building blocks.
Asymmetric Synthesis of the HMG-CoA Reductase Inhibitor Atorvastatin Calcium: An Organocatalytic Anhydride Desymmetrization and Cyanide-Free Side Chain Elongation Approach
asymmetric synthesis of atorvastatin calcium has been achieved from commercially available diethyl 3-hydroxyglutarate through a novel approach that involves an organocatalyticenantioselective cyclic anhydride desymmetrization to establish C(3) stereogenicity and cyanide-free assembly of C7 amino type side chain via C5+C2 strategy as the key transformations.
一种有效的不对称合成阿托伐他汀钙的方法是通过一种新颖的方法从市售的3-羟基戊二酸二乙酯中合成,该新颖的方法涉及有机催化对映选择性环状酸酐去对称化,以通过C建立C(3)立体性和C 7氨基型侧链的无氰化物组装。5 + C 2策略为关键转换。