Copper-Catalyzed Enantiotopic-Group-Selective Allylation of <i>gem</i>-Diborylalkanes
作者:Minjae Kim、Bohyun Park、Minkyeong Shin、Suyeon Kim、Junghoon Kim、Mu-Hyun Baik、Seung Hwan Cho
DOI:10.1021/jacs.0c11750
日期:2021.1.20
We report a copper-catalyzed enatiotopic-group-selective allylation of gem-diborylalkanes with allyl bromides. The combination of copper(I) bromide and H8-BINOL derived phosphoramidite ligand proved to be the most effective catalytic system to provide various enantioenriched homoallylic boronate esters, containing a boron-substituted stereogenic center that is solely derived from gem-diborylalkanes
An enantioselective total synthesis of aspergillides A and B
作者:Haruhiko Fuwa、Hiroshi Yamaguchi、Makoto Sasaki
DOI:10.1016/j.tet.2010.07.062
日期:2010.9
An enantioselective totalsynthesis of aspergillides A and B has been accomplished on the basis of a unified synthetic strategy that exploits stereodivergent intramolecular oxa-conjugate cyclization and Yamaguchi macrolactonization.
Asymmetric Palladium‐Catalyzed Oxycarbonylation of Terminal Alkenes: Efficient Access to β‐Hydroxy Alkylcarboxylic Acids
作者:Bing Tian、Xiang Li、Pinhong Chen、Guosheng Liu
DOI:10.1002/anie.202104252
日期:2021.6.25
leading to high reactivity and excellent enantioselective control. Compared to the conventional methods, the reaction itself features alkenes as easily prepared starting materials, mild and operationally simple reaction conditions, and insensitivities to air and water. Moreover, this method allows for broad alkene substrate scope, excellent regio- and enantioselectivities, scalabilities and a wide array
A Unified Total Synthesis of Aspergillides A and B
作者:Haruhiko Fuwa、Hiroshi Yamaguchi、Makoto Sasaki
DOI:10.1021/ol100463a
日期:2010.4.16
An enantioselective totalsynthesis of aspergillides A and B has been accomplished based on a unified strategy, wherein a hydroxy-directed, highly chemoselective olefin cross-metathesis and a diastereoselective intramolecular oxa-conjugate cyclization were employed to forge the 2,6-substituted tetrahydropyran substructure.
A short and convergent total synthesis of (+)-cladospolide D is delineated, which involves olefin cross metathesis and furan oxidation to access the γ-oxo-α,β-unsaturated acid and Yamaguchi lactonization to construct the 12-membered ring as key steps.
描述了 (+)-cladospolide D 的短而收敛的全合成,其中包括烯烃交叉复分解和呋喃氧化以获取 γ-氧代-α,β-不饱和酸和 Yamaguchi 内酯化以构建 12 元环作为关键步骤.