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Moltzen EK, Perregaard J, Meier E. Sigma ligands with subnanomolar affinity and preference for the sigma 2 binding site. 2. Spiro-joined benzofuran, isobenzofuran, and benzopyran piperidines. J Med Chem. 1995 May 26;38(11):2009–17. doi: 10.1021/jm00011a020. PMID: 7783132. |