Asymmetric Total Syntheses and Structure Revision of Eurotiumide A and B, and Evaluation of their Fluorescent Properties as Natural Probes

被引:0
作者
Nakayama, Atsushi [1 ,2 ]
机构
[1] Tokushima Univ, Inst Biomed Sci, Tokushima 7708505, Japan
[2] Tokushima Univ, Grad Sch Pharmaceut Sci, Tokushima 7708505, Japan
基金
日本学术振兴会;
关键词
natural product; fluorescence; anti-fouling; anti-bacterial agent; total synthesis; EPOXIDATION METHOD; N-FORMYLSACCHARIN; ACID DERIVATIVES; CO SOURCE; CARBONYLATION;
D O I
10.5059/yukigoseikyokaishi.76.498
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Asymmetric total syntheses and structure revision of dihydroisocoumarin-type natural products, eurotiumide A and eurotiumide B have been described. Key features of these total syntheses are the asymmetric Shi epoxidation, regioselective epoxide opening, and Pd-catalyzed CO insertion-lactonization cascade reaction to construct 4-methoxyisochroman-1-one skeleton. X-ray crystallographic analysis of the key intermediate revealed the absolute configuration and relative structure of eurotiumides, and it revised the reported structures of eurotiumide A and B, respectively. These natural products also exhibited highly fluorescence with several solvents with large Stokes shift.
引用
收藏
页码:498 / 501
页数:4
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