作者:Ondřej Hylse、Lukáš Maier、Roman Kučera、Tomáš Perečko、Aneta Svobodová、Lukáš Kubala、Kamil Paruch、Jakub Švenda
DOI:10.1002/anie.201706809
日期:2017.10.2
A 24‐step synthesis of (±)‐forskolin is presented, which delivered hundred milligram quantities of this complex diterpene in one pass. Transformations key to our approach include: a) a strategic allylic transposition, b) stepwise assembly of a sterically encumbered isoxazole ring, and c) citric acid‐modified Upjohn dihydroxylation of a resilient tetrasubstituted olefin. The developed route has exciting
提出了一种(±)-毛喉素的24步合成方法,可一次传递100毫克量的这种复杂的二萜。我们方法的关键转变包括:a)战略性烯丙基转位,b)立体组装的异恶唑环的逐步组装,以及c)柠檬酸改性的弹性四取代烯烃的Upjohn二羟基化。所开发的路线对于制备新的福斯高林类似物具有令人激动的潜力,而半合成则无法获得。