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。
Method for the total synthesis of cyclosporins, novel cyclosporins and
申请人:Sandoz Ltd.
公开号:US04554351A1
公开(公告)日:1985-11-19
A method for the total synthesis of cyclosporins, in particular Cyclosporin A, cyclosporins produced in accordance with the method of the invention and novel intermediates, in particular novel [1S, 2R, 3R]- and [1R, 2S, 3S]-1-nitrilo-1-carbonyl-3-methyl-2-oxy-heptanes and -hept-5-enes, employed in the method of the invention.
Synthesis of Cyclosporine. Part II. Synthesis of Boc-D-Ala-MeLeu-MeLeu-MeVal-OH, a part of the peptide sequence of cyclosporine, by different strategic ways and synthesis of its isomers Boc-D-Ala-MeLeu-D-MeLeu-MeVal-OH, Boc-D-MeLeu-DMeVal-OH, and Boc-D-Ala-MeLeu-MeLeu-D-MeVal-OH as reference compounds
作者:Roland M. Wenger
DOI:10.1002/hlca.19830660836
日期:1983.12.14
Boc-D-Ala-MeLeu-MeLeu-MeVal-OH (DLLL) and itsisomers DLDL, DLDD and DLLD were synthesized using several differentstrategic approaches and a modification of the mixed pivalic anhydride method for carboxyl activation. Alternatively, the tert-butoxy-carbonyl (Boc) or benzyloxycarbonyl (Z) amino-protecting groups and the benzyloxy (OBzl) or tert-butoxy (OtBu) carboxyl-protecting groups were used to protect