A“Chiral Aldehyde” Equivalent as a Building Block Towards Biologically Active Targets
作者:Barry M. Trost、Matthew L. Crawley
DOI:10.1002/chem.200305634
日期:2004.5.3
by the Bayer corporation. These studies further inspired work that culminated in the total synthesis of (+)-brefeldin A, a natural product with a range of significant biological properties. All of the stereochemistry in this target molecule was derived from two palladium-catalyzedasymmetricallylicalkylation reactions. The trans-alkenes were synthesized by a Julia olefination and a ruthenium-catalyzed
GRACILIN A AND CONGENERS AS IMMUNOSUPPRESSIVE AND NEUROPROTECTIVE AGENTS
申请人:THE TEXAS A&M UNIVERSITY SYSTEM
公开号:US20210002245A1
公开(公告)日:2021-01-07
Gracilin A congeners and methods for their use as immunosuppressive and neuroprotective agents.
Palladium Catalyzed Kinetic and Dynamic Kinetic Asymmetric Transformations of γ-Acyloxybutenolides. Enantioselective Total Synthesis of (+)-Aflatoxin B<sub>1</sub> and B<sub>2</sub><sub>a</sub>
作者:Barry M. Trost、F. Dean Toste
DOI:10.1021/ja020988s
日期:2003.3.1
either a kinetic resolution or a kineticasymmetrictransformation (KAT) or dynamickineticasymmetrictransformation (DYKAT). Performing the reaction at high concentration (0.5 M) in the presence of a carbonate base favors the former, i.e., KAT; whereas, running the reaction at 0.1M in the presence of tetra-n-butylammonium chloride favors the DYKAT process. Syntheses of aflatoxin B(1) and B(2a) employs