Abstract
One rare flavonoid–diterpene heterodimer, denticulatain C (1), one modified geranyl-type side chain substituted flavonoid, denticulatain D (2) and one geranylated flavonoid, denticulatain E (3), as well as 11 known compounds (4–14) were isolated from the fronds of Macaranga denticulata. Their structures were elucidated on the basis of extensive spectroscopic interpretation. Compounds 4 and 8 inhibited the proliferation of A-549 cell line with IC50 values of 48.6 and 20.2μg/mL, respectively. Compounds 3, 6, and 8 exhibited significant antiangiogenic activity on a zebrafish model with IC50 values of 9.78, 0.34, and 2.55μg/mL, respectively.
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