中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 6-chloro-5-hydroxy-4-methoxy-7H-furo[3,2-g][1]benzopyran-7-one | 919367-09-2 | C12H7ClO5 | 266.638 |
—— | bis-(5-hydroxy-4-methoxy-7-oxo-7H-furo[3,2-g]chromen-6-yl)-methane | 119560-45-1 | C25H16O10 | 476.396 |
—— | 5-Chloro-4-methoxy-7-oxo-7H-furo[3,2-g]chromene-6-carbaldehyde | 196874-48-3 | C13H7ClO5 | 278.649 |
—— | 5-mercapto-4-methoxy-7H-furo[3,2-g][1]benzopyran-7-thione | 919367-12-7 | C12H8O3S2 | 264.326 |
A number of new linearly fused furochromones were synthesized. The methodology was performed starting from naturally occurring visnagin and khellin via enaminone formation using N,N-dimethyl formamide dimethylacetal followed by ring closure in acidic medium. Various reactions on the enaminone derivatives are described.