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In this Letter, we describe a short, six step enantioselective route to spiroaminal lactam model systems reminiscent of marineosins A and B that has been developed starting from either (R)- or (S)-hydroxysuccinic acid, respectively, in ∼9% overall yield. This route enables late stage incorporation of the pyrrole ring at C5 via nucleophilic displacement of an iminium triflate salt.
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