Catalytic and stoichiometric approaches to the desymmetrisation of centrosymmetric piperazines by enantioselective acylation: a total synthesis of Dragmacidin A
作者:Mark Anstiss、Adam Nelson
DOI:10.1039/b608910k
日期:——
The enantioselective desymmetrisation of centrosymmetric piperazines was investigated using both catalytic and stoichiometric asymmetric acylation approaches. The catalytic approach involved the desymmetrisation of 2,5-trans-dimethylpiperazine under the control of chiralDMAPanalogues. With one equivalent of piperazine, relative to the acylating agent, low yields of products were obtained in up to