Liu, Hsing-Jang; Zhu, Bing-Yan, Canadian Journal of Chemistry, 1991, vol. 69, # 12, p. 2008 - 2013
作者:Liu, Hsing-Jang、Zhu, Bing-Yan
DOI:——
日期:——
Regioselective Isomerisation of Highly Substituted 1-Methylenecyclohexenepoxides to the Corresponding Allylic Alcohols. Influence of the Base and of the Protecting Groups
Highlysubstituted 1-methylenecyclohexenepoxides 3 , useful building blocks for a projected synthesis of wailupemycin A ( 1 ), were synthesized from ( R )-carvone in eight synthetic steps in 23–40% overall yield. The regioselectivity of the subsequent isomerisation to the corresponding allylic alcohols was shown to depend on the basicity of the reagent and on the bulkiness of the protecting groups
作者:Philipp Klahn、Alexander Duschek、Clémence Liébert、Stefan F. Kirsch
DOI:10.1021/ol300058t
日期:2012.3.2
The total synthesis of (+)-cyperolone, an eudesmane-derived sesquiterpenoid from Cyperus rotundus, is described. The de novo synthesis was accomplished via a 15 step sequence starting from (R)-(−)-carvone. The synthetic route features a platinum-catalyzed cycloisomerization to rapidly construct the bicyclic core from a 3-silyloxy-1,5-enyne intermediate.