Robust and straightforward chemo-enzymatic enantiopure dipeptide syntheses and diketopiperazines thereof
作者:Pedro C. Pereira、Isabel W.C.E. Arends、Roger A. Sheldon
DOI:10.1016/j.tetasy.2014.04.005
日期:2014.5
successfully converted into their corresponding enantiopure diketopiperazines by chemical esterification and cyclization under alkaline conditions, in 35–43% yield. In the case of glutamic acid, the procedure yielded the diketopiperazine with an esterified side chain. Remarkably with glutamine, the amide function in the side chain was transformed into an ester moiety, resulting in the same diketopiperazine