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Yoshito Kishi (1937-2023)
Yoshito Kishi (1937-2023)
Professor. Yoshito Kishi,
a member of the Honorary Editorial Associates of HETEROCYCLES,
has passed away on January 9, 2023 at the age of 85.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
January 13, 2023
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Paper | Regular issue | Vol 43, No. 8, 1996, pp.1699-1712
Published online, 1st January, 1970■ Preparation and Conformational Study of Deformyl-Z- and Deformyl-E-geissoschizine Epimers and Na-Boc Derivatives, and Their Nb-Oxides
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
Abstract
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.
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