Oxidative Coupling as a Biomimetic Approach to the Synthesis of Scytonemin

被引:37
作者
Ekebergh, Andreas [1 ]
Karlsson, Isabella [2 ]
Mete, Rudi [2 ]
Pan, Ye [1 ]
Borje, Anna [2 ]
Martensson, Jerker [1 ]
机构
[1] Chalmers, Dept Chem & Biol Engn Organ Chem, SE-41296 Gothenburg, Sweden
[2] Univ Gothenburg, Dept Chem, SE-41296 Gothenburg, Sweden
基金
瑞典研究理事会;
关键词
SUNSCREEN SCYTONEMIN; PIGMENT; CYANOBACTERIA; BIOSYNTHESIS; DERIVATIVES; SCOPE; ARYL;
D O I
10.1021/ol201812n
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The first total synthesis of the dimeric alkaloid pigment scytonemin is described. The key transformations In Its synthesis from 3-indole acetic acid are a Heck carbocyclization and a Suzuki-Miyaura cross-coupling, orchestrated In a stereospecific tandem fashion, followed by a biosynthetically inspired oxidative dimerization. The tandem sequence generates a tetracyclic (E)-3-(arylidene)-3,4-dihydrocyclopenta[b]indol-2(1H)-one that is subsequently dimerized into the unique homodimeric core structure of scytonemin.
引用
收藏
页码:4458 / 4461
页数:4
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