ligands were designed and synthesized. The rhodium complexes with the ligands were applied to the asymmetric transfer hydrogenation of broad range of long-chained aliphatic ketoesters in neatwater. Quantitative conversion and excellent enantioselectivity (up to 99% ee) was observed for α-, β-, γ-, δ- and ε-ketoesters as well as for α- and β-acyloxyketone using chiral surfactant-type catalyst 2. The CH/π
Chemical Synthesis of a Glycolipid Library by a Solid-Phase Strategy Allows Elucidation of the Structural Specificity of Immunostimulation by Rhamnolipids
variations in the carbohydrate part, the lipid components, and the stereochemistry of the 3-hydroxy fattyacids was designed and synthesized. The enantioselective synthesis of the 3-hydroxy fattyacid building blocks was achieved by employing asymmetric hydrogenation of 3-oxo fattyacids. Glycolipids were prepared by this approach without any intermediary isolation steps, mostly in excellent yields. Final