“…1 The rhizomes of this plant are extensively used as spice and as a crude drug in traditional medicine for the treatment of various conditions, such as inflammation, sprains, rheumatism, muscular pain, wounds, asthma, constipation, dyspepsia, gastritis, stomach bloating, and stomachache. [2][3][4][5][6] The extracts of Z. cassumunar contain many constituents, including phenylbutanoids, curcuminoids, flavonoids, terpenes, and quinones, and exhibit diverse bioactivities, including antioxidant, anti-inflammatory, anticancer, antihistaminic, and antimicrobial activities. [2][3][4][5] The main constituents isolated from rhizome extracts are phenylbutanoids (Figure 1), [7][8][9][10][11][12] such as (E)-1-(3 0 ,4 0 -dimethoxyphenyl)butadiene (DMPBD) (1), (E)-4-(3 0 ,4 0 -dimethoxyphenyl)but-3-en-1-ol (2), (E)-4-(3 0 ,4 0 -dimethoxyphenyl)but-3-en-1-yl acetate (3), and the dimers (±)-cis-3-(3 0 ,4 0 -dimethoxy-phenyl)-4-[(E)-3 0 ,4 0 -dimethoxystyryl]-cyclohex-1-ene ( 4) and (±)-trans-3-(3 0 ,4 0 -dimethoxy-phenyl)-4-[(E)-3 0 ,4 0dimethoxystyryl]-cyclohex-1-ene (5).…”