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Paper | Regular issue | Vol 92, No. 2, 2016, pp.291-304
Published online, 24th December, 2015
DOI: 10.3987/COM-15-13381
Experimental Investigation of Tetracyclic Compounds Containing a Nine-Membered Sultam via Cobalt Alkyne Complexes

Kyosuke Kaneda,* Misuzu Fujita, and Risa Naruse

*Hokkaido Pharmaceutical University, 7-Jo 15-4-1 Maeda,Teine,Sapporo,Hokkaido 006-8590, Japan


The synthesis, reactivity, and stereochemistry of nine-membered sultams fused with cobalt alkyne complexes using sequential Nicholas and Pauson–Khand reactions are reported. Novel tetracyclic compounds containing nine-membered sultam moieties were characterized by NMR spectroscopy and X-ray crystallography.