作者:Valentin S. Enev、Wolfgang Felzmann、Alexey Gromov、Stefan Marchart、Johann Mulzer
DOI:10.1002/chem.201200257
日期:2012.7.27
The first total synthesis of the macrolactone antibiotic branimycin (4) has been described. The key disconnection leads to a cis‐dehydrodecalone core and a polyketide side chain which are connected via organometallic addition. The dehydrodecalone core was targeted via altogether five different approaches featuring various kinds of chiral elements and ring‐closing methodology. In the end the most successful
已经描述了大内酯抗生素布雷尼霉素的首次全合成(4)。关键的分离导致顺式-脱氢十氢萘酮核和聚酮化物侧链,它们通过有机金属加成连接。十氢癸酮核心通过总共五种不同的方法作为目标,这些方法具有各种手性元素和闭环方法。最后,选择了最成功的方法,从二环氧萘109开始进行合成。因此,通过有机金属脱对称反应引入氧官能团和碳附件,以生成环氧乙烷107,乙烯基碘化物11在环氧乙烷107上生成。转化成有机锂物质后加入有机硅。通过经由迈克尔加成和随后的大内酯化引入酯侧链来完成合成。