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

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Abstract
The proton magnetic resonance spectra of N-methylco-claurine 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.