• Archives of Pharmacal Research
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• v.28 no.11
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• pp.1239-1243
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• 2005

A new norditerpenoid and a known alkaloid were isolated from the alkaloidal fraction of the processed tubers of Aconitum carmichaeli. The structure of the new norditerpenoid alkaloid was elucidated as lipoforesaconitine (1) on the basis of spectroscopic analysis. The known norditerpenoid alkaloid was characterized as lipoyunanaconitine (2). In addition, a new flavonoid, 6'-O-acetylliquiritin (7), along with a known ceramide, (2S,3S,4R,8E)-2-[(2'R)-2'­hydroxylignoceroylamino]-8(E)-octadecene-1,3,4-triol (3), as well as a known steroid saponin, gracillin (8), and three known flavonoids, Iiquiritigenin (4), isoliquiritigenin (5), and liquiritin (6), were also isolated and characterized. All known compounds were isolated from this plant for the first time. The structures of the isolates were established by spectroscopic and chemical methods.

• Archives of Pharmacal Research
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• v.26 no.9
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• pp.709-715
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• 2003

Aconitum jaluense Komar. (Ranunculaceae) is one of the Aconitum plants growing in Korean peninsula. An investigation of the alkaloidal constituents of this species led to the isolation of seven $C_{19}$-norditerpenoid and a $C_{20}$-diterpenoid alkaloid. Three of them have been identified as neoline, mesaconitine, and hypaconitine, which were isolated from this plant collected from Mt. Bultasan in the north part. The other five alkaloids were determined as lipomesaconitine, lipohypaconitine, 15$\alpha$-hydroxyneoline, hokbusine A, and napelline, which have not been found in this plant. Structures of those alkaloids were determined on the basis of their spectral data. It is of interest to note that a comparison of the present work and the previous report showed some differences in the alkaloidal contents.

• 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.