Studies on the Alkaloids of Menispermaceous Plants. CCXVI. Nuclear Magnetic Resonance Spectra of Benzylisoquinoline Derivatives (1).N-Methylcoclaurine Type Bases

The proton magnetic resonance spectra of N-methylcoclaurine type bases were examined and assignment of the alkoxyl groups and aromatic protons was presented. Correlations of the Chemical shifts with stereochemistry of the molecule were discussed.