Venkateswarlu V, Srivastava S K, Joshi B S, Desai H K, Pelletier S W
Institute for Natural Products Research, University of Georgia, Athens 30602-2556, USA.
J Nat Prod. 1995 Oct;58(10):1527-32. doi: 10.1021/np50124a008.
Vakhmatine [1] and the new diterpenoid alkaloid 13-O-acetylvakhmatine [3] have been isolated from the polar alkaloidal fractions of the seeds of Consolida ambigua, together with ajacine, delcosine, gigactonine, and takaosomine. Structure 3 has been established on the basis of spectroscopic data and chemical correlation with 1.