Total synthesis of cyclotheonamides E2 and E3: application of cyano ylide methodology
作者:Harry H. Wasserman、Rui Zhang
DOI:10.1016/s0040-4039(02)00599-3
日期:2002.5
A totalsynthesis of cyclotheonamides E2 and E3 is reported. A key step in the synthesis involves the formation of the α-keto amide linkage by application of the cyano ylide activation of a carboxyl group as developed in our earlier syntheses of cyclic peptides in the family of protease inhibitors.
Total Synthesis of Nominal (11<i>S</i>)- and (11<i>R</i>)-Cyclocinamide A
作者:Jessica M. Garcia、Stephanie S. Curzon、Katharine R. Watts、Joseph P. Konopelski
DOI:10.1021/ol300576n
日期:2012.4.20
14-membered tetrapeptide core. The initially reported biological data and intriguing structure, which was without full stereochemical identification, necessitated synthesis of both nominal (all-S) cyclocinamide A and the 11R isomer. The completed synthesis is highlighted by the use of a (cyclo)asparagine-containing dipeptide as a turn inducing fragment. Due to inconsistencies in analytical data between natural