Spiro[pyrido[3,2,1-ij]pyrimido[4,5-b]quinoline-7,5′-pyrrolo[2,3-d]pyrimidines] and Spiro[pyrimido[4,5-b]quinoline-5,1′-pyrrolo[3,2,1-ij]quinolines] Derived from 5,6-Dihydro-4H-pyrrolo[3,2,1-ij]quinoline-1,2-dione