Total Synthesis of Cyclosporine: Access to N-Methylated Peptides via Isonitrile Coupling Reactions
作者:Xiangyang Wu、Jennifer L. Stockdill、Ping Wang、Samuel J. Danishefsky
DOI:10.1021/ja100517v
日期:2010.3.31
tertiary amide bond formations have been applied to a novel totalsynthesis of the important cyclic polypeptide cyclosporine A. Specifically, the disclosed synthetic route demonstrates the utility of microwave-mediated carboxylic acid isonitrile couplings, thioacid isonitrile couplings at ambient temperature, and isonitrile-mediated couplings of carboxylic acids and thioacids with amines to form challenging
使用异腈提供仲和叔酰胺键形成的最新进展已应用于重要环状多肽环孢菌素 A 的新型全合成。 具体而言,所公开的合成路线证明了微波介导的羧酸异腈偶联、硫代酸的效用环境温度下的异腈偶联,以及异腈介导的羧酸和硫代酸与胺的偶联以形成具有挑战性的酰胺键。
Expanding the Limits of Isonitrile-Mediated Amidations: On the Remarkable Stereosubtleties of Macrolactam Formation from Synthetic <i>Seco</i>-Cyclosporins
作者:Xiangyang Wu、Jennifer L. Stockdill、Peter K. Park、Samuel J. Danishefsky
DOI:10.1021/ja2103372
日期:2012.2.1
The scope of isonitrile-mediated amide bond-forming reactions is further explored in this second-generation synthetic approach to cyclosporine (cyclosporin A). Both type I and type II amidations are utilized in this effort, allowing access to epimeric cyclosporins A and H from a single precursor by variation of the coupling reagents. This work lends deeper insight into the relative acylating ability of the formimidate carboxylate mixed anhydride (FCMA) intermediate, while shedding light on the far-reaching impact of remote stereochemical changes on the effective preorganization of seco-cyclosporins.
COLUCCI, WILLIAM J.;TUNG, ROGER D.;PETRI, JOHN A.;RICH, DANIEL H., J. ORG. CHEM., 55,(1990) N, C. 2895-2903
作者:COLUCCI, WILLIAM J.、TUNG, ROGER D.、PETRI, JOHN A.、RICH, DANIEL H.
DOI:——
日期:——
DUMONT, FRANCIS J.;DURETTE, PHILIPPE L.;PESSOLANO, ARSENIO A.;BOGER, JOSH+
作者:DUMONT, FRANCIS J.、DURETTE, PHILIPPE L.、PESSOLANO, ARSENIO A.、BOGER, JOSH+