Table 2.

C-prenylated flavonoids isolated from P. tomentosa

Name of compound and ID	Isolation	Biological activity	Chemical structure

			R
6-Isopentenyl-3′-O-methyltaxifolin (19) (2R, 3R)	Fruit (Šmejkal et al. 2007a)		H
3,4′,5,5′,7-Pentahydroxy-3′-methoxy-6-(3-methyl-2-butenyl) flavanone (20) (2R, 3R)	Fruit (Asai et al. 2008)	Antioxidant (Asai et al. 2008); cytotoxic (A2780 human ovarian cancer cell line) (Murphy et al. 2005, 2006)	OH