Enantioselective synthesis of herbertane sesquiterpenes: synthesis of (−)-α-formylherbertenol
作者:Antonio Abad、Consuelo Agulló、Ana C Cuñat、Remedios H Perni
DOI:10.1016/s0957-4166(00)00079-3
日期:2000.4
4-hydroxy-3-[(1S)-1,2,2-trimethylcyclopentyl]benzaldehyde [(−)-α-formylherbertenol 1], a herbertane-type sesquiterpene isolated from the leafy liverwort Herberta adunca, from β-cyclogeraniol is described. The synthesis is based on the previously described preparation of an enantiopure 1,2,2-trimethylcyclopentane synthon from which the characteristic aromatic moiety of 1 is elaborated, using a Robinson annulation
4-羟基3的合成- [(1-小号苯甲醛[( - ) - α-formylherbertenol)-1,2,2-三甲基环戊基] 1,从多叶苔分离的herbertane型倍半萜] Herberta adunca,从β描述了-环香叶醇。合成是基于先前描述的对映纯1,2,2-三甲基环戊烷合成子的制备,其中罗宾逊环和钯催化的三氟甲磺酸芳基酯的甲氧基羰基化反应是关键的合成步骤,从中精制1的特征芳族部分。还描述了使用相同的方法合成天然倍半萜烯(-)-α-香叶烯醇,也是天然倍半萜烯。