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https://pubmed.ncbi.nlm.nih.gov/38116862
Scientists at National Chung Hsing University in Taiwan have developed a novel, one-pot synthesis route for a complex azepane-fused tetrahydro-β-carboline framework, using Rh-catalyzed hydroformylation double cyclization and stereoselective alkylation, and applied it to the total synthesis of (±)-20-epi-kopsiyunnanine K.