13C-NMR studies on the cevanine alkaloids : the application of 13C-NMR spectrum for structure elucidation of new alkaloids, baimonidine and isoverticine

13C-NMR studies on the cevanine alkaloids : the application of 13C-NMR spectrum for structure elucidation of new alkaloids, baimonidine and isoverticine Isobaimonidine, a new Fritillaria alkaloid from the aerial part of Fritillaria verticillata. Isosteroidal Alkaloids from Fritillaria verticillata Willd. and Their <scp>NMR</scp> Spectroscopic Characteristics Isobaimonidin — ein neues Alkaloid aus Fritillaria imperialis L Isobaimonidin — ein neues Alkaloid aus Fritillaria imperialis L ¹³C Nuclear magnetic resonance spectroscopy in the elucidation of structures of diterpenoid alkaloids Neocaryachine, a New Pavine Alkaloid from Cryptocarya chinensis, and NMR Spectral Properties of Related Alkaloids Neocaryachine, a New Pavine Alkaloid from Cryptocarya chinensis, and NMR Spectral Properties of Related Alkaloids NMR study of alkaloids. V.13C NMR spectra and reconsideration of the structures of 11- and 10-hydroxypleiocarpamines and the structures of new alkaloids fromVinca erecta A Study of Alkaloids in Veratrum viride Aiton