Syntheses and reactions of the diethyl α-alkynylmalonates involving the generation of conjugated allenyl esters as the latent active species: A new approach to the development of cysteine proteinase inhibitors
作者:Yoshimitsu Nagao、Kweon Kim、Shigeki Sano、Hisao Kakegawa、Woo Song Lee、Hisashi Shimizu、Motoo Shiro、Nobuhiko Katunuma
DOI:10.1016/0040-4039(95)02284-8
日期:1996.2
Various diethylα-alkynylmalonates (DAM) having potential as cysteineproteinaseinhibitors were synthesized by treatment of diethyl acetyliminomalonate (or ketomalonate) with several lithium acetylides. Hydrolytic decarboxylation of the DAM under the mild basic conditions afforded oxazole derivatives or allenylesters which caused the Michael type reaction with EtSH.