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gamma-Carboline AC190 analogues via palladium catalysed allene insertion stereo and regioselective 3-and 5-component cascades

2016    Dondas, H. Ali; Hempshall, Aiden; Narramore, Sarah; Kilner, Colin; Fishwick, Colin W. G.; Grigg, Ronald

gamma-Carbolines were prepared from pyrido[4,3-b]-5H-indoles via Pd(0)-catalysed, stereo and regioselective allene/uridine allene insertion 3- and 5-component cascades. This versatile reaction sequence gives a range of structurally diverse carboline derivatives and tolerates a broad range of substrates. The power of this approach has been harnessed to produce gamma-carboline based HDAC inhibitors. (C) 2016 Elsevier Ltd. All rights reserved.