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Synlett 1991; 1991(6): 428-430
DOI: 10.1055/s-1991-20752
DOI: 10.1055/s-1991-20752
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Transition Metal-Diene Complexes in Organic Synthesis; Part 8.1 Iron-Mediated Approach to the Discorhabdin and Prianosin Alkaloids
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Publication Date:
07 March 2002 (online)
The iron-mediated spiroannelation of a 6-aminoindo-line derivative (1-acetyl-6-amino-4,7-dimethoxyindoline) allows an easy access to a tetracyclic subunit (tricarbonylspiro[(η4-4-methoxy-2,4- cyclohexadiene) -1,5′ - (1′- acetyl -2′ ,3′ ,5′ ,6′ ,7′ ,8′ - hexahydro- 4′ ,9′ -dimethoxy[1H]pyrrolo[3,2-g]quinoline)]iron) of the discorhabdin and prianosin alkaloids.