作者:Karsten Krohn、Krisztina Vukics
DOI:10.1055/s-2007-983873
日期:2007.9
The first chemical synthesis of S2502 and S2507, highly active antiviral, bioengineered fermentation products, has been achieved using a biomimetic approach. Key steps of the synthesis involved addition of the dianion of acetylacetone to isochromene 10, followed by boron tribromide mediated simultaneous methyl ether cleavage, E/ Z isomerization, cyclization, and transesterification/saponification to
S2502 和 S2507 是高效抗病毒生物工程发酵产物的首次化学合成,已使用仿生方法实现。合成的关键步骤包括将乙酰丙酮的双阴离子添加到异色烯 10 中,然后是三溴化硼介导的同时甲基醚裂解、E/Z 异构化、环化和酯交换/皂化,得到 S2502 (7) 和 S2507 (8)。在相关反应中,通过用乙酰乙酸甲酯的双阴离子处理异色烯10,然后进行三溴化硼处理,获得类似的酯20和21。