• Korean Journal of Pharmacognosy
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• v.33 no.3 s.130
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• pp.187-190
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• 2002

Three diterpene alkaloids, songorine (1), neoline (2), N-deethylneoline (3), were isolated from Kyong-Po Buja (Processed Aconitium carmichaeli, Ranunculaceae) which was used as Chinese traditional medicine with analgesic, anti-inflammatory and cardiotonic activity. Their structures were established by chemical and spectroscopic methods.

• Korean Journal of Pharmacognosy
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• v.39 no.2
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• pp.127-134
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• 2008

From the under ground part of Aconitum volubile Pall. (Ranunculaceae),seven nor- or di-terpenoid alkaloids were isolated and identified by NMR spectra and mass spectrum. The alkaloids were three $C_{19}$-norditerpenoid alkaloids such as isotalatizidine, altaconitine and vilmorrianine A, and four $C_{20}$-diterpenoid alkaloids such as 12-epidehydronapelline, 12-epinapelline, songoramine and songorine. Some of the isolated diterpenoid alkaloids were subjected to oxidation reaction with active $MnO_2$ and oxoammonium salt. The results were C-12 oxidation(ketone formation) and N-dealkylation in veatchin-type and decomposition to non-alkaloidal compounds in atisine-type ajaconine.