Abstract
An optically active octahydro-6H-pyrido[4.3-b]carbazole derivative was obtained by Fischer indolization of a decahydroisoquinolone with phenylhydrazine. The reaction proceeded with quantitative regioselectivity; no angular annulation products could be observed. The tetracyclic product was derivatized by sulfonamide, urea or carboxamide formation. Its linear constitution as well as relative and absolute configuration were established by single crystal X-ray crystallography of a derivative.
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