Synthesis of spiro analogs of lilolidine alkaloids

The Friedel-Krafts intramolecular cyclization of N-chloroacetyl- and N-α-bromopropionyl-4-methylspiro[tetrahydroquinoline-2-cyclohexanes] was used to obtain 2-oxo-1,2,5,6-tetrahydro-4H-spiro[pyrrolo(3,2,1-i,j)quinoline-4,1′-cyclohexanes]- spiro analogs of lilolidine alkaloids. © 1994 Plenum Publishing Corporation.