Lipase-Catalyzed Asymmetric Dealkoxylcarbonylation of σ-Symmetrical β-Ketodiesters and Its Application to the Synthesis of (-)-Podocarpic Acid
作者:Manabu Node、Takahiro Katoh、Ken-ichiro Awasaguchi、Daisuke Mori、Hiroyuki Kimura、Tetsuya Kajimoto
DOI:10.1055/s-2005-918962
日期:——
Optically active 2,6-dimethylcyclohexanone-2-carboxylate was prepared by PLE-catalyzed dealkoxycarbonylation of Ï-symmetrical β-ketodiesters, which possess quarternary carbons at α- and α′-positions. Moreover, (-)-podocarpic acid was prepared in a short sequence from 2,6-dimethylcyclohexanone-2-carboxylate.
光学活性的2,6-二甲基环己酮-2-羧酸酯是通过PLE催化的去烷氧羧基化反应从具有四氢碳的对称β-酮二酯制备而成。此外,(-)-波多卡尔酸是通过短序列反应从2,6-二甲基环己酮-2-羧酸酯制备的。