Return to Article Details 2,1-BENZOTHIAZINE 2,2-DIOXIDES. 8. SYNTHESIS AND STRUCTURE OF 2'-AMINO-2-OXO-1,2-DIHYDRO-6'<i>H</i>-SPIRO[INDOLE-3,4'-PYRANO[3,2-<i>c</i>][2,1]BENZOTHIAZINE]-3'-CARBONITRILE 5',5'-DIOXIDES Download Download PDF