SYNTHESIS OF SPIRO(ISOBENZOFURAN-1(3H),4′-PIPERIDINES) AS POTENTIAL CENTRAL NERVOUS SYSTEM AGENTS. 6. SYNTHESIS, CARBON-13 NMR, AND BIOLOGICAL EVALUATION N OF CIS- AND TRANS-4-AMINO-3′-ARYLSPIRO(CYCLOHEXANE-1,1′(3′H)-ISOBENZOFURAN) DE