Journal
JOURNAL OF NATURAL PRODUCTS
Volume 71, Issue 4, Pages 564-569Publisher
AMER CHEMICAL SOC
DOI: 10.1021/np070512s
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Four new Daphniphyllum alkaloids, daphnioldhanines H-K (1-4), along with 34 known alkaloids, were isolated from Daphniphyllum oldhami. The known alkaloid dehydrodaphnigraciline (5) is now reported as a natural product. Their structures were elucidated by spectroscopic methods, especially 2D NMR techniques. The effects against platelet aggregation of compounds 1, 3, and 5 were evaluated, and 3 showed stronger activity against platelet aggregation induced by PAF. This is the first report of quinolizidine alkaloids from the genus Daphniphyllum.
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