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Paper | Regular issue | Vol 43, No. 8, 1996, pp.1699-1712
Published online, 1st January, 1970
DOI: 10.3987/COM-96-7503
Preparation and Conformational Study of Deformyl-Z- and Deformyl-E-geissoschizine Epimers and Na-Boc Derivatives, and Their Nb-Oxides

Mauri Lounasmaa,* Reija Jokela,* Pirjo Hanhinen, Christiane Laine, and Ulla Anttila

*Laboratory of Organic Chemistry, Helsinki University of Technology, P.O. Box 6100,FIN-02015 HUT, Espoo, Finland


Syntheses are reported for deformylgeissoschizine isomers (1-4) and their Na-Boc derivatives (5-8), as well as for their Nb-oxides (cis and trans) (9-13) and (16-20). Predominant conformations of the compounds were determined by nmr measurements.