Journal of Natural Products 2007-May
Tricalysiamides A-D, diterpenoid alkaloids from Tricalysia dubia.
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Abstrakts
Four rearranged ent-kaurane diterpenoid alkaloids, tricalysiamides A-D (1-4), having a cafestol-type carbon framework were isolated from the wood of Tricalysia dubia. Their absolute structures were determined on the basis of 2D NMR spectroscopy, X-ray crystallographic analysis, and chemical methods.
