Short and Versatile Route to a Key Intermediate for Lactacystin Synthesis
作者:Philip C. Bulman Page、A. Sazali Hamzah、David C. Leach、Steven M. Allin、David M. Andrews、Gerasimos A. Rassias
DOI:10.1021/ol027387q
日期:2003.2.1
[reaction: see text] A key intermediate 14 for the synthesis of lactacystin 1 has been constructed in four steps and 33% overall yield. The key steps involve cyclization of a suitably functionalized glutamic acid derivative and concomitant alkylation of the resulting beta,beta-diketoester system, C-acylation of the cyclic alpha-amidoketone 9, and decarboxylbenzylation of 12. Alkylation of a related