condensation with carbonyl compounds, alkylation, and oxidation with oxygen to provide 3,5-disubstituted 2-isoxazolines as useful synthetic building blocks. Raney nickel hydrogenolysis of 3-[(diethoxyphosphoryl)methyl]-2-isoxazolines gives β-hydroxy-β′-phosphoryl ketones bearing a variety of functional groups, which can be further converted into α,β-unsaturated β′-phosphoryl ketones.
On the mark: The absoluteconfiguration of (−)-hydroxynitrilaphos from Streptomyces regensis WC-3744 was determined and a labeling strategy was developed to investigate the biosynthetic connection between hydroxynitrilaphos and hydroxyphosphonocystoximate.