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Four New Nor-Diterpenoid Alkaloids from Aconitum brachypodum

✍ Scribed by Yong Shen; Ai-Xue Zuo; Zhi-Yong Jiang; Xue-Mei Zhang; Hong-Ling Wang; Ji-Jun Chen

Publisher
John Wiley and Sons
Year
2010
Tongue
German
Weight
195 KB
Volume
93
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Four new C~19~‐nor‐diterpenoid alkaloids, named brachyaconitines A–D (1–4), were isolated from the roots of Aconitum brachypodum Diels. Their structures were elucidated as 3‐O‐acetyl‐20‐deethyl‐20‐formylaconitine (1), 3‐O‐acetyl‐19,20‐didehydro‐20‐deethylaconitine (2), 3‐O‐acetyl‐8‐de(acetyloxy)‐7,8,17,20‐tetradehydro‐20‐deethyl‐7,17‐secoaconitine (3), and 1‐O‐methylflavaconitine (4) by means of MS, IR, 1D‐ and 2D‐NMR analyses. The structure of compound 1 was confirmed by an X‐ray diffraction experiment.

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