Versatile new approach to the synthesis of monosubstituted and bicyclic piperazine-2,5-diones: unusual in situ generation and enolate addition to a cumulene
Oxidation of α-ylido, β-keto amides to vicinal tricarbonyls. Synthesis of a diketopiperazine precursor of bicyclomycin.
摘要:
The Yoshimura intermediate in the total synthesis of bicyclomycin was prepared by intramolecular addition of an amide to an alpha,beta-diketoamide. The resulting unsymmetrical diketopiperazine was then converted to the diol ether target.