Puberunine and Puberudine, Two New C18-Diterpenoid Alkaloids from Aconitum barbatum var. puberulum
Organic Letters2012Vol. 14(11), pp. 2758–2761
Citations Over TimeTop 12% of 2012 papers
Abstract
Two C(18)-diterpenoid alkaloids, puberunine (1) and puberudine (2), together with four other new alkaloids, including the first examples having β-oriented substitution at C-3 and a rare chloro-substituent were isolated from Aconitum barbatum var. puberulum. Their structures were elucidated by spectroscopic methods. Puberunine and puberudine, which possess a unique rearranged E ring and an opened A ring, respectively, represent new subtypes of the C(18)-diterpenoid alkaloids. A plausible biosynthetic pathway of 1 and 2 was proposed.
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