作者:Kentaro Yaji、Mitsuru Shindo
DOI:10.1016/j.tet.2010.10.084
日期:2010.12
The total synthesis of the antibiotic, (±)-xanthocidin (1), is described. The FeCl3-promoted fast Nazarov reaction of the β-alkoxy divinyl ketone in the presence of t-BuOH provided the α-exo-methylene cyclopentenone, which is the core skeleton of this natural product. After methoxymethyl (MOM) esterification and protection of the reactive exo-methylene unit with a phenylseleno group, dihydroxylation
描述了抗生素(±)-黄药素(1)的总合成。在叔丁醇的存在下,FeCl 3促进了β-烷氧基二乙烯基酮的快速Nazarov反应,从而提供了α- exo-亚甲基环戊烯酮,这是该天然产物的核心骨架。在甲氧基甲基(MOM)酯化并用苯基硒烯基保护反应性外-亚甲基单元后,进行二羟基化,然后氧化,得到了黄原素MOM酯。最后,在温和条件下将该酯转化为(±)-黄药素(1)。