Total Synthesis of Potent Antifungal Marine Bisoxazole Natural Products Bengazoles A and B
作者:James A. Bull、Emily P. Balskus、Richard A. J. Horan、Martin Langner、Steven V. Ley
DOI:10.1002/chem.200700033
日期:2007.6.25
The bengazoles are a family of marine natural products that display potent antifungal activity and a unique structure, containing two oxazole rings flanking a single carbon atom. Total syntheses of bengazole A and B are described, which contain a sensitive stereogenic centre at this position between the two oxazoles. Additionally, the synthesis of 10-epi-bengazole A is reported. Two parallel synthetic
苯并恶唑是一系列海洋天然产物,它们显示出强大的抗真菌活性和独特的结构,包含两个位于单个碳原子两侧的恶唑环。描述了苯并恶唑A和B的全部合成,其在两个恶唑之间的该位置含有一个敏感的立体异构中心。另外,已经报道了10-表-联苯并唑A的合成。研究了两条平行的合成路线,这取决于在温和条件下的2,4-二取代恶唑的构建和非对映选择性的1,3-偶极环加成反应。我们成功的途径是高产,可以快速获得复杂天然产物的单一立体异构体,并可以合成类似物进行生物学评估。