The NMR investigation of alkaloids. IX.13C NMR spectra and stereochemistry of convolvine, convolamine, convoline, convolidine, subhirsine, and 6-hydroxyhyoscyamine

On the basis of the results of a study of the13C NMR spectra, a correlation has been made of the CSs of the13C carbon nuclei with the structure and stereochemistry of the tropane alkaloids convolvine, convolamine, convoline, convolidine, subhirsine, and 6-hydroxyhyoscyamine. It has been established that the N-CH3 group in convolamine and the N-OH group in… (More)