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  • Title: Tricalysiamides A-D, diterpenoid alkaloids from Tricalysia dubia.
    Author: Nishimura K, Hitotsuyanagi Y, Sugeta N, Fukaya H, Aoyagi Y, Hasuda T, Kinoshita T, Takeya K.
    Journal: J Nat Prod; 2007 May; 70(5):758-62. PubMed ID: 17411093.
    Abstract:
    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.
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