作者:Leo A. Paquette、Won Hun Ham、David S. Dime
DOI:10.1016/s0040-4039(01)80832-7
日期:1985.1
The tetracyclic epoxide 16 was prepared in stereocontrolled fashion from 4,4-dimethylcyclohexanone, the key steps being Saegusa ring expansion of its silyl enol ether to 5, ortho ester Claisen rearrangement of 7, and cyclization of 9 without rupture of the three-membered ring. Epoxide 16 had previously been transformed into dactylol, thus completing the formal total synthesis.
由4,4-二甲基环己酮以立体控制的方式制备四环环氧化物16,关键步骤是将其甲硅烷基烯醇醚的Saegusa环扩环为5,将正酯克莱森重排为7,以及环化9而不破坏三元环。 。先前已将环氧化物16转化为dactylol,从而完成了正式的全合成。