hexahydro-8-hydroxy-(2α,6α,8α,9αβ)-2,6-Methano-2H-quinolizin -3(4H)-one 2,6-Methano-2H-quinolizin-3(4H)-one,hexahydro-8-hydroxy-, stereoisoMer endo-8-Hydroxyhexahydro-1H-2,6-Methanoquinolizin-3(2H)-one dolasetron intermediates ENDO-HEXAHYDRO-HYDROXY-2,6-METHANO-2H-QUINOLIZIN-3-(4H)-ONE (2A,6A,8A,9AB)-, HEXAHYDRO-8-HYDROXY-, 2,6-METHANO-2H-QUINOLIZIN-3(4H)-ONE (2α,6α,8α,9αβ)-Hexahydro-8-hydroxy-2,6-methano-2H-quinoliz INTERMEDIATE OF DOLASETRON