Hexahydrobenz ¢cd! indoles and processes for preparation...

Details Hexahydrobenz ¢cd! indoles and processes for preparation... Hexahydrobenz ¢cd! indoles and processes for preparation...

C - Chemistry, Metallurgy

07

D

260/317, 260/298

C07D 487/06 (2006.01) C07D 209/90 (2006.01)

Patent

CA 2037098

New intermediates, and processes therefor, provide an efficient method for deriving 4-amino-1,2,-2a,3,4,5-hexahydrobenz[cd]indoles, which are themselves intermediates to useful CNS agents, from the Kornfeld-Woodward ketone and like compounds. Preferred embodiments provide means for the preparation of substantially pure enantiomers of the desired 4-amino-1,2,2a,3,4,5-hexahydrobenz[cd]indole. This invention further provides compounds of the formula (see formula IV) provided that if the 4-position is in the R configuration, the 5-position is in the S configuration, and provided that if the 4-position is in the S configuration, the 5-position is in the R configuration.

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