作者:Alexander J. Oelke、Francesca Antonietti、Leonardo Bertone、Philippa B. Cranwell、David J. France、Rebecca J. M. Goss、Tatjana Hofmann、Stephan Knauer、Steven J. Moss、Paul C. Skelton、Richard M. Turner、Georg Wuitschik、Steven V. Ley
DOI:10.1002/chem.201003216
日期:2011.4.4
Here we describe in full our investigations into the synthesis of the dimeric cyclohexapeptide chloptosin in 17 linear steps. Particularly, this work features an organocatalytic tandem process for the synthesis of the embedded piperazic acids, in which a differentially protected azodicarboxylate is used together with pyrrolidinyl tetrazole as the catalyst. The central biaryl bond is being formed by
在这里,我们以17个线性步骤完整地描述了对二聚环六肽chlottosin合成的研究。特别地,该工作的特征在于用于合成嵌入的哌嗪酸的有机催化串联方法,其中将受保护的偶氮二羧酸酯与吡咯烷基四唑一起用作催化剂。中心联芳基键由两个空间上要求的邻氯吡咯并吲哚片段的斯蒂勒偶联形成。合成策略的固有灵活性被证明是有益的,因为可以在合成程序的进行过程中平稳地调整路线。