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。
Concise total synthesis of the prolyl endopeptidase inhibitor eurystatin A via a novel Passerini reaction–deprotection–acyl migration strategy
作者:Timothy D Owens、Gian-Luca Araldi、Ruth F Nutt、J.Edward Semple
DOI:10.1016/s0040-4039(01)01287-4
日期:2001.9
The Passerini reaction between suitably protected alaninal, leucine isonitrile, and ornithine components delivered adducts 10a,b in high yield. Orthogonal N-deprotection of 10a led, via a smooth O- to N-acyl migration, to 11, which constitutes the entire skeleton of the eurystatins. Subsequent deprotection, macrocyclization, elaboration, and final oxidation steps efficiently afforded eurystatin A 1a in high overall yield. (C) 2001 Elsevier Science Ltd. All rights reserved.