Baccharis grisebachii acid from

Other antimicrobial phenolic compounds from the Anthemideae tribe are coumarins, which are derivatives of benzo-a-pyrone. Feresin et al. [199] isolated eight / -coumaric acid derivatives from the Argentinian medicinal plant Baccharis grisebachii. Two of them, 3-prenyl-/ -coumaric acid, Fig. (38) and 3,5-diprenyl-p-coumaric acid were active towards Epidermophyton floccosum and Trichophyton rubrum, with MIC values of 50 and 100-125 ig/ml, respectively. 

Fig. (38). Structure of 3-prenyl-p-coumaric acid isolated from Baccharis grisebachii...

From Bolivian Baccharis species, two prenylated coumaric acids, Fig. (50) were isolated from B. boliviensis [33], while B. grisebachii, an endemic species from Argentina, yielded 3-(3,3-dimethylallyl)-/ -coumaric acid [72],... 

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