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nih.gov
pubmed.ncbi.nlm.nih.gov
Smith, Amos; Kanoh, Ishiyama; Minakawa, Rainier; Hartz, Cho; Cui, Moser (9 July 2003). "Tremorgenic Indole Alkaloids. The Total Synthesis of (-)-Penitrem D". Journal of the American Chemical Society. 125 (7): 8828–8837. doi:10.1021/ja034842k. PMID12837093.
