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Stereoselective Formation of Fused Tricyclic Amines from Acyclic Aldehydes by a Cascade Process Involving Condensation, Cyclization, and Dipolar CycloadditionBURRELL, Adam J. M; COLDHAM, Iain; WATSON, Luke et al.Journal of organic chemistry. 2009, Vol 74, Num 6, pp 2290-2300, issn 0022-3263, 11 p.Article