Total Synthesis of (±)-Kellermanoldione: Stepwise Cycloaddition of a Functionalized Diene and Allenoate
作者:Michael E. Jung、Jesus Cordova、Masayuki Murakami
DOI:10.1021/ol901455q
日期:2009.9.3
The totalsynthesis of the diterpene kellermanoldione 1 is reported. Stepwise [4 + 2] cycloaddition of the ketal diene 8 and the allenoate 3 afforded the exo adduct 10x as the major product. It was converted into 1 via six steps, among them a key nonconjugative hydrolysis of a γ-methylene silyl enol ether.