Two new diterpenoid alkaloids from the roots of Aconitum nagarum and their cytotoxic activity
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A chemical investigation on the roots of Aconitum nagarum afforded two undescribed C19-diterpenoid alkaloids nagarumines D and E (1 and 2). The structures of the new compounds were elucidated by spectral methods such as 1D and 2D (1H-1H COSY, HMQC, and HMBC) N... ...