Abstract
The structures and stereochemistries of several 6-azabicyclo[3.2.1]octene derivatives, obtained by rearrangement reactions of the catharanthine synthesis, were determined by various NMR methods. Long-range 13C–1H coupling constants were measured by selective two-dimensional INEPT experiments. The dependence of 3J(C,H) and 2J(C,H) coupling constants on the dihedral angles and on the position of an electronegative substituent along the coupling path was studied.
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