“…The fractionation of the hexane extract yielded 15 fractions (A–O) (Figure B). Fractions A–E, H, I, L, and M have been unambiguously identified by HRMS and NMR (Figures S7–61, Supporting Information) and by comparison with literature as F-A, vanillin ( 1 ) and cassumunol H ( 2 ) in mixture; F-B, ferulaldehyde ( 3 ) and methyl vanillin ( 4 ) in mixture; F-C, 3,4-dimethoxycinnamaldehyde ( 5 ); F-D, ( E )-4-(3,4-dimethoxyphenyl)but-3-en-1-ol ( 6 ); F-E, ( E )-4-(3,4-dimethoxyphenyl)but-3-enyl acetate ( 7 ); F-H, ( E )-1-(3,4-dimethoxyphenyl)buta-1,3-diene ( 8 ); F-I, ( E )-1-(3,4-dimethoxyphenyl)but-1-ene ( 9 ); F-L, 3,4-bis (3,4-dimethoxyphenyl)-1,5-octadiene ( 10 ), trans -banglene ( 11 ) and cis -banglene ( 12 ) in mixture; F-M, 11 and 12 in mixture (Figure C). Compounds 1 – 9 , 11 , and 12 were already described in Z. purpureum , except for 10 which was described for the first time, although it has been reported as a product after pyrolysis of cis -1,2-bis[( E )-3,4-dimethoxystyryl]cyclobutane via Cope rearrangement …”